ASTROSAT CZTI

Data Quality Report

Orbit 53646

Creation date: 2025-08-29T11:29:14.981625
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_022T05_9000006504_53646cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53646cztM0_level2_quad_clean.evt
Size (bytes)1,008,561,60070,778,880
Size961.8 MB 67.5 MB
Events in quadrant A4,589,273626,359
Events in quadrant B8,452,572538,276
Events in quadrant C15,168,975112,585
Events in quadrant D8,632,308421,661

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179471
B0295601
C0493411
D0299801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63583635.709343%
B6359168326.466426%
C6359532983.802485%
D6359197531.058343%

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 7388 6359 192 192 2.60% 3.02%
B 7389 6360 1264 1264 17.11% 19.87%
C 7389 6359 4915 4915 66.52% 77.29%
D 7389 6359 1580 1580 21.38% 24.85%

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 3 78 821458 4595.03 720 704 178.6
A 15 174 359031 2006.11 720 704 178.6
A 4 191 197043 1099.21 720 704 178.6
B 4 206 4236742 31263.78 638 616 135.5
B 5 172 559842 4127.24 638 616 135.5
B 5 185 367582 2708.31 638 616 135.5
C 1 241 11674421 120264.91 347 345 97.1
C 15 224 973441 10024.72 347 345 97.1
C 13 3 624879 6433.87 347 345 97.1
D 8 176 4377147 24724.89 609 581 177.0
D 10 172 534438 3015.96 609 581 177.0
D 15 93 378568 2135.39 609 581 177.0

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