ASTROSAT CZTI

Data Quality Report

Orbit 55296

Creation date: 2025-12-17T20:17:23.735797
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_009T01_9000006534_55296cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55296cztM0_level2_quad_clean.evt
Size (bytes)398,508,48089,611,200
Size380.0 MB 85.5 MB
Events in quadrant A2,884,447589,078
Events in quadrant B2,919,624623,738
Events in quadrant C3,504,074555,374
Events in quadrant D4,952,283505,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134141
B0134621
C0150731
D0190921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6308961.521877%
B63081061.680406%
C63091612.551910%
D63094877.719131%

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 7148 6308 44 44 0.62% 0.70%
B 7148 6308 24 24 0.34% 0.38%
C 7149 6310 123 123 1.72% 1.95%
D 7149 6309 423 423 5.92% 6.70%

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 0 8 210260 1283.54 660 644 163.3
A 4 205 47442 286.56 660 644 163.3
A 4 3 22750 135.36 660 644 163.3
B 2 249 163332 1165.04 646 623 139.7
B 0 199 75429 535.63 646 623 139.7
B 7 252 35747 251.5 646 623 139.7
C 9 38 422210 2408.29 635 628 175.1
C 13 3 253271 1443.22 635 628 175.1
C 12 252 124447 707.32 635 628 175.1
D 11 129 1996889 11274.95 625 599 177.1
D 6 239 140016 787.42 625 599 177.1
D 7 96 132007 742.19 625 599 177.1

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