ASTROSAT CZTI

Data Quality Report

Orbit 57207

Creation date: 2026-04-29T20:48:11.759798
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/AS1A14_070T08_9000006568_57207cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57207cztM0_level2_quad_clean.evt
Size (bytes)696,983,04083,240,640
Size664.7 MB 79.4 MB
Events in quadrant A3,201,005598,187
Events in quadrant B3,866,490638,928
Events in quadrant C6,438,769509,682
Events in quadrant D11,734,596272,195

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150982
B0166962
C0243122
D0398692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7195560.778318%
B71952954.100069%
C719596613.425990%
D7195366450.924253%

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 8233 7478 14 14 0.17% 0.19%
B 8233 7478 129 129 1.57% 1.73%
C 8233 7478 833 833 10.12% 11.14%
D 8233 7478 3272 3272 39.74% 43.76%

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 3 95 193173 1019.68 764 742 188.7
A 4 249 14151 71.05 764 742 188.7
A 13 254 11123 55.01 764 742 188.7
B 0 213 352739 2191.1 750 723 160.7
B 5 185 278689 1730.18 750 723 160.7
B 0 199 57728 354.82 750 723 160.7
C 15 224 3532148 18638.36 700 693 189.5
C 12 254 115023 603.41 700 693 189.5
C 7 220 16072 81.17 700 693 189.5
D 12 33 8531457 64769.04 465 443 131.7
D 12 128 510139 3869.71 465 443 131.7
D 8 240 330844 2508.47 465 443 131.7

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