ASTROSAT CZTI

Data Quality Report

Orbit 20211117_A10_067T01_9000004770_level2

Creation date: 2021-11-20T16:41:17.973868
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/AS1A10_067T01_9000004770cztM0_level2_bc.evt modeM0/AS1A10_067T01_9000004770cztM0_level2_quad_clean.evt
Size (bytes)3,812,195,520907,378,560
Size3.6 GB 865.3 MB
Events in quadrant A15,328,3205,855,437
Events in quadrant B27,213,8435,724,300
Events in quadrant C20,290,1765,685,323
Events in quadrant D47,800,8595,351,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01455130
B02017570
C01622370
D02568440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014480
B014490
C014520
D014540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A710241090.153469%
B7097353737.570485%
C7102013601.914954%
D7089034514.868106%

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 98090 71191 5 5 0.01% 0.01%
B 98090 71160 291 291 0.30% 0.41%
C 98090 71196 518 518 0.53% 0.73%
D 98090 71112 449 449 0.46% 0.63%

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 14 254 171205 199.43 3862 3805 839.4
A 13 254 117565 135.53 3862 3805 839.4
A 13 6 95806 109.61 3862 3805 839.4
B 5 172 7855843 10797.2 3703 3627 727.2
B 0 219 1283778 1760.27 3703 3627 727.2
B 5 31 700746 958.57 3703 3627 727.2
C 1 23 2859135 3406.52 3713 3692 838.2
C 0 10 1373201 1633.81 3713 3692 838.2
C 9 187 491211 581.61 3713 3692 838.2
D 8 195 19494622 20044.18 3695 3612 972.4
D 2 250 4227386 4343.65 3695 3612 972.4
D 12 218 1739162 1784.81 3695 3612 972.4

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