ASTROSAT CZTI

Data Quality Report

Orbit 20220718_A11_075T01_9000005244_level2

Creation date: 2022-08-02T19:40:42.266285
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_075T01_9000005244cztM0_level2_bc.evt modeM0/AS1A11_075T01_9000005244cztM0_level2_quad_clean.evt
Size (bytes)22,538,056,3204,537,140,480
Size21.0 GB 4.2 GB
Events in quadrant A94,097,88033,746,101
Events in quadrant B286,511,24211,004,253
Events in quadrant C110,601,72534,294,986
Events in quadrant D165,057,96531,958,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078620
B078600
C078600
D078620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08089070
B014500020
C08521550
D010808340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014740
B014740
C014740
D014750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38431611280.293508%
B38418832729685.191625%
C38430846001.196957%
D384313219965.723460%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 589203 384428 119 119 0.02% 0.03%
B 589202 216618 58284 58284 9.89% 26.91%
C 589203 384336 906 906 0.15% 0.24%
D 589203 384308 7463 7463 1.27% 1.94%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 13110881 3038.03 19333 19051 4309.3
A 9 143 1687083 387.08 19333 19051 4309.3
A 14 235 950863 216.23 19333 19051 4309.3
B 12 1 248765106 198760.22 6220 6080 1251.6
B 5 172 3601383 2872.67 6220 6080 1251.6
B 5 255 1505131 1197.75 6220 6080 1251.6
C 15 214 15616305 3564.18 19104 19015 4376.1
C 0 10 6229559 1419.19 19104 19015 4376.1
C 14 254 5213294 1186.96 19104 19015 4376.1
D 12 235 16444870 3637.85 18792 18230 4515.5
D 13 249 12437006 2750.27 18792 18230 4515.5
D 12 17 9570846 2115.53 18792 18230 4515.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter