ASTROSAT CZTI

Data Quality Report

Orbit 56211

Creation date: 2026-02-17T10:15:08.581066
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_083T04_9000006550_56211cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56211cztM0_level2_quad_clean.evt
Size (bytes)696,372,48071,196,480
Size664.1 MB 67.9 MB
Events in quadrant A13,587,631211,343
Events in quadrant B3,387,060547,513
Events in quadrant C4,369,243479,241
Events in quadrant D3,923,299459,455

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448431
B0145711
C0179111
D0165741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6569414763.129852%
B65691382.100776%
C65695498.357436%
D65692503.805754%

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 7628 6692 4005 4005 52.50% 59.85%
B 7628 6853 29 29 0.38% 0.42%
C 7628 6853 458 458 6.00% 6.68%
D 7628 6853 192 192 2.52% 2.80%

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 7221363 54644.42 526 514 132.1
A 8 176 1713019 12959.53 526 514 132.1
A 7 64 958226 7247.57 526 514 132.1
B 0 171 187870 1292.0 682 657 144.9
B 0 63 135457 930.29 682 657 144.9
B 4 156 105126 720.97 682 657 144.9
C 12 254 1599172 8951.59 651 646 178.6
C 12 252 95422 530.74 651 646 178.6
C 9 237 59334 328.65 651 646 178.6
D 4 230 346979 1839.34 663 633 188.3
D 6 239 241973 1281.68 663 633 188.3
D 8 129 223075 1181.32 663 633 188.3

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