ASTROSAT CZTI

Data Quality Report

Orbit 53354

Creation date: 2025-08-09T15:01:43.662099
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/AS1C09_011T08_9000006492_53354cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53354cztM0_level2_quad_clean.evt
Size (bytes)845,634,24072,365,760
Size806.5 MB 69.0 MB
Events in quadrant A5,553,349547,389
Events in quadrant B4,720,418654,916
Events in quadrant C12,932,693197,423
Events in quadrant D7,605,953349,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209371
B0184501
C0427371
D0271842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6321111917.702895%
B63214647.340611%
C6321455171.998102%
D6320260841.265823%

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 7495 6320 1002 1002 13.37% 15.85%
B 7495 6320 282 282 3.76% 4.46%
C 7495 6320 4346 4346 57.99% 68.77%
D 7495 6320 1418 1418 18.92% 22.44%

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 15 174 2562140 16429.07 628 614 155.9
A 3 62 153293 979.25 628 614 155.9
A 3 30 60634 384.96 628 614 155.9
B 4 206 600880 4236.42 669 647 141.7
B 0 171 382070 2692.07 669 647 141.7
B 5 185 277095 1951.16 669 647 141.7
C 15 178 5575996 51247.14 394 391 108.8
C 15 158 2665684 24497.55 394 391 108.8
C 15 224 1542503 14174.04 394 391 108.8
D 2 62 4539706 34745.19 456 434 130.6
D 6 239 809975 6196.51 456 434 130.6
D 11 245 132150 1008.2 456 434 130.6

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