ASTROSAT CZTI

Data Quality Report

Orbit 58603

Creation date: 2026-07-28T17:55:41.848416
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_044T04_9000006592_58603cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58603cztM0_level2_quad_clean.evt
Size (bytes)844,649,28088,626,240
Size805.5 MB 84.5 MB
Events in quadrant A4,532,786690,528
Events in quadrant B4,706,581710,989
Events in quadrant C16,494,657165,595
Events in quadrant D4,963,241605,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182852
B0190052
C0540712
D0200843

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73321802.454992%
B73325147.010366%
C7332573578.218767%
D73314215.742736%

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 8762 7333 71 71 0.81% 0.97%
B 8761 7331 225 225 2.57% 3.07%
C 8762 7333 5706 5706 65.12% 77.81%
D 8760 7332 423 423 4.83% 5.77%

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 14 651688 3215.91 814 790 202.4
A 12 114 316200 1558.35 814 790 202.4
A 7 64 183498 902.71 814 790 202.4
B 6 255 633892 3692.06 796 765 171.5
B 8 234 207697 1206.72 796 765 171.5
B 0 171 128181 743.02 796 765 171.5
C 15 217 10816368 88017.56 446 441 122.9
C 15 164 3578164 29114.7 446 441 122.9
C 12 249 92538 749.46 446 441 122.9
D 2 249 1287701 5813.78 773 738 221.4
D 8 240 193787 872.09 773 738 221.4
D 2 120 133187 598.33 773 738 221.4

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