ASTROSAT CZTI

Data Quality Report

Orbit 20210712_A10_058T08_9000004532_level2

Creation date: 2025-12-27T10:08:09.401024
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_058T08_9000004532cztM0_level2.fits modeM0/AS1A10_058T08_9000004532cztM0_level2_quad_clean.evt
Size (bytes)782,363,520576,662,400
Size746.1 MB 549.9 MB
Events in quadrant A5,008,3763,263,754
Events in quadrant B4,586,7463,186,007
Events in quadrant C4,601,2722,918,819
Events in quadrant D4,238,3862,835,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01605500
B02378700
C02222910
D01800970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015620
B015620
C015620
D015620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A766768421.098127%
B7667622882.983985%
C7667655067.180865%
D7667613881.810214%

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 88972 76676 0 0 0.00% 0.00%
B 88972 76674 0 0 0.00% 0.00%
C 88972 76638 0 0 0.00% 0.00%
D 88972 76657 0 0 0.00% 0.00%

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 0 29 4892 11.49 1305 1226 319.0
A 0 30 3915 8.43 1305 1226 319.0
A 7 110 3891 8.35 1305 1226 319.0
B 2 9 3697 10.66 1214 1162 237.9
B 3 80 3139 8.31 1214 1162 237.9
B 5 225 3053 7.95 1214 1162 237.9
C 12 241 3184 6.64 1218 1141 307.6
C 9 209 3105 6.39 1218 1141 307.6
C 3 187 3077 6.29 1218 1141 307.6
D 7 3 2952 5.84 1210 1107 315.8
D 10 189 2948 5.83 1210 1107 315.8
D 6 231 2896 5.67 1210 1107 315.8

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