ASTROSAT CZTI

Data Quality Report

Orbit 56596

Creation date: 2026-03-15T06:38:58.760557
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_083T06_9000006558_56596cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56596cztM0_level2_quad_clean.evt
Size (bytes)453,363,84094,466,880
Size432.4 MB 90.1 MB
Events in quadrant A3,528,456628,775
Events in quadrant B3,895,281684,006
Events in quadrant C4,474,098550,417
Events in quadrant D4,365,267532,069

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154702
B0162082
C0182172
D0179792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66681892.834433%
B66682033.044391%
C66686469.688062%
D66684466.688662%

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 8808 6670 143 143 1.62% 2.14%
B 8808 6669 104 104 1.18% 1.56%
C 8808 6670 291 291 3.30% 4.36%
D 8808 6670 401 401 4.55% 6.01%

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 8 295079 1697.93 702 684 173.4
A 4 249 197714 1136.38 702 684 173.4
A 3 14 77153 441.04 702 684 173.4
B 5 185 783307 5260.71 703 676 148.8
B 5 236 99800 666.29 703 676 148.8
B 3 145 80858 538.97 703 676 148.8
C 12 252 697858 3851.51 658 651 181.0
C 15 230 367115 2024.42 658 651 181.0
C 15 199 142984 786.28 658 651 181.0
D 6 239 862143 4627.21 658 628 186.2
D 2 249 460815 2471.67 658 628 186.2
D 2 31 107178 572.28 658 628 186.2

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