ASTROSAT CZTI

Data Quality Report

Orbit 56130

Creation date: 2026-02-12T10:36:09.060954
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_083T03_9000006548_56130cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56130cztM0_level2_quad_clean.evt
Size (bytes)613,560,96074,810,880
Size585.1 MB 71.3 MB
Events in quadrant A6,946,115441,229
Events in quadrant B3,895,615583,520
Events in quadrant C7,668,738351,317
Events in quadrant D3,756,311488,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246405
B0155641
C0267831
D0152951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5736141824.721060%
B57362634.585077%
C5736199934.850070%
D57362023.521618%

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 6801 5737 1334 1334 19.61% 23.25%
B 6801 5736 111 111 1.63% 1.94%
C 6801 5736 1781 1781 26.19% 31.05%
D 6801 5737 169 169 2.48% 2.95%

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 12 115 3504851 25354.1 553 541 138.2
A 0 8 501134 3621.85 553 541 138.2
A 15 32 269194 1943.74 553 541 138.2
B 5 185 491488 3818.25 605 584 128.6
B 5 236 451306 3505.71 605 584 128.6
B 10 247 218211 1692.7 605 584 128.6
C 15 147 3020793 24597.93 441 436 122.8
C 15 148 1597200 13004.12 441 436 122.8
C 9 38 1081194 8801.74 441 436 122.8
D 2 120 617434 3715.37 584 557 166.0
D 14 52 249991 1502.31 584 557 166.0
D 2 249 203615 1222.99 584 557 166.0

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