ASTROSAT CZTI

Data Quality Report

Orbit 57283

Creation date: 2026-04-30T15:55:02.380848
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_049T03_9000006570_57283cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57283cztM0_level2_quad_clean.evt
Size (bytes)513,383,040110,692,800
Size489.6 MB 105.6 MB
Events in quadrant A3,820,105734,967
Events in quadrant B3,710,218790,921
Events in quadrant C6,631,657642,381
Events in quadrant D4,233,897638,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167730
B0167550
C0251080
D0184390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7823340.434616%
B7824901.150307%
C782478810.071575%
D78242383.041922%

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 7823 7823 18 18 0.23% 0.23%
B 7824 7824 18 18 0.23% 0.23%
C 7824 7824 535 535 6.84% 6.84%
D 7824 7824 168 168 2.15% 2.15%

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 8 4 345213 1668.93 834 812 206.4
A 7 64 131551 633.55 834 812 206.4
A 3 14 71530 342.69 834 812 206.4
B 5 185 110512 615.61 827 796 178.2
B 0 199 86443 480.56 827 796 178.2
B 7 252 72501 402.33 827 796 178.2
C 15 224 2631111 12420.32 782 775 211.8
C 12 2 493145 2324.95 782 775 211.8
C 6 223 104828 491.33 782 775 211.8
D 3 224 732148 3297.98 795 759 221.8
D 2 249 68181 304.02 795 759 221.8
D 5 173 67197 299.58 795 759 221.8

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