ASTROSAT CZTI

Data Quality Report

Orbit 58284

Creation date: 2026-07-06T23:19:16.148298
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_044T03_9000006588_58284cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58284cztM0_level2_quad_clean.evt
Size (bytes)881,464,32081,270,720
Size840.6 MB 77.5 MB
Events in quadrant A3,412,142658,552
Events in quadrant B7,322,801630,855
Events in quadrant C4,117,883628,738
Events in quadrant D17,231,92853,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153410
B0266575
C0173820
D0560880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7015791.126158%
B7015102014.540271%
C70151652.352103%
D7015647492.287954%

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 7015 7015 38 38 0.54% 0.54%
B 7015 7015 724 724 10.32% 10.32%
C 7015 7015 115 115 1.64% 1.64%
D 7015 7015 6343 6343 90.42% 90.42%

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 4 238 227987 1197.13 764 747 189.8
A 8 249 47962 248.73 764 747 189.8
A 3 62 44135 228.57 764 747 189.8
B 10 128 2076542 13500.67 717 691 153.8
B 4 206 861097 5595.81 717 691 153.8
B 4 158 668208 4341.32 717 691 153.8
C 12 252 794848 3885.74 740 733 204.4
C 13 3 159876 778.71 740 733 204.4
C 6 223 74989 363.35 740 733 204.4
D 12 110 15317878 163352.12 326 311 93.8
D 13 170 161598 1720.02 326 311 93.8
D 2 249 89027 946.1 326 311 93.8

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