ASTROSAT CZTI

Data Quality Report

Orbit 56374

Creation date: 2026-02-28T07:58:09.201220
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_083T05_9000006554_56374cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56374cztM0_level2_quad_clean.evt
Size (bytes)822,369,60079,767,360
Size784.3 MB 76.1 MB
Events in quadrant A15,505,744156,082
Events in quadrant B3,539,616700,326
Events in quadrant C4,694,216596,052
Events in quadrant D6,178,804492,377

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505452
B0152162
C0188072
D0230892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6745532578.947368%
B6745851.260193%
C67453224.773907%
D674599414.736842%

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 7844 6745 5295 5295 67.50% 78.50%
B 7845 6746 45 45 0.57% 0.67%
C 7845 6746 307 307 3.91% 4.55%
D 7845 6746 1002 1002 12.77% 14.85%

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 12 3 10363903 109547.56 373 363 94.6
A 7 64 1304920 13789.79 373 363 94.6
A 12 194 1241179 13116.02 373 363 94.6
B 0 213 123433 799.56 714 690 153.5
B 10 247 119219 772.11 714 690 153.5
B 8 128 77630 501.19 714 690 153.5
C 15 230 567095 3035.04 684 678 186.6
C 5 250 450169 2408.51 684 678 186.6
C 12 254 338661 1811.02 684 678 186.6
D 8 129 2829918 15739.1 637 607 179.8
D 2 249 506556 2814.53 637 607 179.8
D 6 239 98963 547.14 637 607 179.8

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