ASTROSAT CZTI

Data Quality Report

Orbit 56942

Creation date: 2026-04-07T13:06:59.891094
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_083T14_9000006564_56942cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56942cztM0_level2_quad_clean.evt
Size (bytes)697,642,56076,996,800
Size665.3 MB 73.4 MB
Events in quadrant A5,716,675565,709
Events in quadrant B5,358,877567,922
Events in quadrant C3,153,775568,875
Events in quadrant D11,135,455214,656

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210771
B0200181
C0135721
D0371021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59214717.954737%
B592185914.507685%
C59221302.195204%
D5922394766.649780%

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 7091 5921 397 397 5.60% 6.70%
B 7091 5921 578 578 8.15% 9.76%
C 7092 5922 80 80 1.13% 1.35%
D 7092 5922 2914 2914 41.09% 49.21%

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 7 64 2928192 18804.9 633 618 155.7
A 10 251 116735 745.86 633 618 155.7
A 3 14 82170 523.84 633 618 155.7
B 10 16 1308196 10434.78 595 574 125.3
B 5 172 1094281 8727.75 595 574 125.3
B 5 185 396494 3159.43 595 574 125.3
C 13 3 348500 2040.48 633 628 170.5
C 6 223 94783 552.28 633 628 170.5
C 7 2 94421 550.15 633 628 170.5
D 12 33 8209243 65124.19 441 420 126.0
D 12 1 311756 2469.96 441 420 126.0
D 8 240 247621 1961.15 441 420 126.0

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