ASTROSAT CZTI

Data Quality Report

Orbit 54522

Creation date: 2025-10-26T17:56:34.904560
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_127T09_9000006520_54522cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54522cztM0_level2_quad_clean.evt
Size (bytes)484,778,880104,264,640
Size462.3 MB 99.4 MB
Events in quadrant A3,477,204689,746
Events in quadrant B4,367,123722,625
Events in quadrant C4,910,613633,887
Events in quadrant D4,616,697596,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157530
B0183460
C0198900
D0192190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7378480.650583%
B73782803.795066%
C73783194.323665%
D73783064.147465%

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 7378 7378 28 28 0.38% 0.38%
B 7378 7378 159 159 2.16% 2.16%
C 7378 7378 275 275 3.73% 3.73%
D 7378 7378 251 251 3.40% 3.40%

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 11 3 163916 838.28 793 773 194.6
A 8 245 102457 522.49 793 773 194.6
A 4 3 84215 428.75 793 773 194.6
B 10 247 758007 4559.94 775 747 166.1
B 5 185 197967 1187.59 775 747 166.1
B 4 81 114737 686.41 775 747 166.1
C 4 5 506271 2418.08 757 750 209.1
C 13 3 356328 1700.85 757 750 209.1
C 12 249 343360 1638.82 757 750 209.1
D 12 3 818145 3811.95 754 719 214.4
D 3 12 324542 1510.1 754 719 214.4
D 15 217 104579 484.33 754 719 214.4

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