ASTROSAT CZTI

Data Quality Report

Orbit 36455

Creation date: 2022-07-19T05:41:00.190693
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/AS1C07_009T01_9000005200_36455cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36455cztM0_level2_quad_clean.evt
Size (bytes)150,048,00030,513,600
Size143.1 MB 29.1 MB
Events in quadrant A946,644200,291
Events in quadrant B1,321,955196,682
Events in quadrant C1,070,177192,243
Events in quadrant D1,066,914188,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041531
B052721
C044021
D046471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199550.250627%
B1995924.611529%
C1995371.854637%
D1995331.654135%

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 3337 1996 0 0 0.00% 0.00%
B 3337 1996 56 56 1.68% 2.81%
C 3337 1996 24 24 0.72% 1.20%
D 3337 1996 25 25 0.75% 1.25%

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 84558 1843.23 218 214 45.8
A 5 168 5751 121.0 218 214 45.8
A 13 254 3433 70.35 218 214 45.8
B 5 172 235019 5461.54 215 209 43.0
B 5 255 125020 2903.03 215 209 43.0
B 4 171 39384 911.19 215 209 43.0
C 0 10 96331 1883.07 212 213 51.0
C 15 214 95651 1869.75 212 213 51.0
C 0 207 48006 936.33 212 213 51.0
D 2 250 81344 1552.33 210 203 52.3
D 10 199 30822 585.78 210 203 52.3
D 12 233 27320 518.78 210 203 52.3

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