ASTROSAT CZTI

Data Quality Report

Orbit 57069

Creation date: 2026-04-16T03:06:06.129583
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_083T10_9000006566_57069cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57069cztM0_level2_quad_clean.evt
Size (bytes)524,937,60094,331,520
Size500.6 MB 90.0 MB
Events in quadrant A3,097,962640,374
Events in quadrant B4,211,968658,747
Events in quadrant C3,722,267609,386
Events in quadrant D7,870,445473,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143121
B0173231
C0157601
D0281461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6806450.661181%
B68074085.993830%
C6807741.087116%
D6807131019.244895%

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 7721 6807 32 32 0.41% 0.47%
B 7722 6808 208 208 2.69% 3.06%
C 7722 6808 63 63 0.82% 0.93%
D 7722 6808 1405 1405 18.19% 20.64%

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 10 251 125288 688.85 726 707 180.9
A 3 14 51657 281.72 726 707 180.9
A 13 248 39873 216.56 726 707 180.9
B 4 171 587688 3884.18 699 672 151.1
B 10 16 546132 3609.21 699 672 151.1
B 5 248 103994 683.66 699 672 151.1
C 1 16 288204 1504.26 699 694 191.1
C 13 3 176227 918.39 699 694 191.1
C 14 245 128256 667.41 699 694 191.1
D 12 33 2804836 15328.57 636 608 182.9
D 15 142 2120235 11586.38 636 608 182.9
D 7 96 95786 520.27 636 608 182.9

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