ASTROSAT CZTI

Data Quality Report

Orbit 20220329_A11_037T01_9000005030_level2

Creation date: 2026-01-02T08:13:42.029135
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_037T01_9000005030cztM0_level2.fits modeM0/AS1A11_037T01_9000005030cztM0_level2_quad_clean.evt
Size (bytes)133,657,92059,883,840
Size127.5 MB 57.1 MB
Events in quadrant A782,396174,214
Events in quadrant B807,148247,399
Events in quadrant C828,072246,157
Events in quadrant D697,014211,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0527550
B0356180
C0312790
D0550050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13485307822.825362%
B134856144.553207%
C134852021.497961%
D134858736.473860%

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 22428 13481 0 0 0.00% 0.00%
B 22427 13481 0 0 0.00% 0.00%
C 22427 13484 0 0 0.00% 0.00%
D 22427 13481 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 7 110 637 8.97 204 194 49.4
A 9 19 632 8.87 204 194 49.4
A 0 29 612 8.47 204 194 49.4
B 2 9 717 11.84 214 206 43.2
B 2 8 578 8.62 214 206 43.2
B 3 80 558 8.16 214 206 43.2
C 3 202 661 8.01 218 207 56.7
C 3 203 644 7.71 218 207 56.7
C 1 81 641 7.66 218 207 56.7
D 7 3 525 6.36 199 183 53.8
D 10 189 514 6.16 199 183 53.8
D 10 113 501 5.91 199 183 53.8

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