ASTROSAT CZTI

Data Quality Report

Orbit 54269

Creation date: 2025-10-09T19:11:15.600020
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_126T15_9000006516_54269cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54269cztM0_level2_quad_clean.evt
Size (bytes)681,681,60083,001,600
Size650.1 MB 79.2 MB
Events in quadrant A2,790,446633,914
Events in quadrant B4,672,153661,699
Events in quadrant C4,826,942544,617
Events in quadrant D12,459,590236,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129401
B0181931
C0188147
D0412741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242620.993271%
B62432544.068557%
C62426109.772509%
D6242388462.223646%

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 7407 6243 29 29 0.39% 0.46%
B 7408 6243 168 168 2.27% 2.69%
C 7406 6242 563 563 7.60% 9.02%
D 7407 6243 3754 3754 50.68% 60.13%

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 67543 404.49 671 655 165.4
A 7 29 27198 160.51 671 655 165.4
A 11 3 19093 111.5 671 655 165.4
B 5 236 939324 6730.71 652 630 139.5
B 7 0 498397 3569.14 652 630 139.5
B 0 213 353678 2531.46 652 630 139.5
C 1 29 2148232 12731.01 609 603 168.7
C 14 254 117778 694.61 609 603 168.7
C 4 5 29418 170.81 609 603 168.7
D 8 176 9847716 81256.32 420 398 121.2
D 10 199 340537 2806.7 420 398 121.2
D 2 62 247712 2040.74 420 398 121.2

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