ASTROSAT CZTI

Data Quality Report

Orbit 25295

Creation date: 2024-06-27T19:16:01.975907
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/AS1A09_022T01_9000003702_25295cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25295cztM0_level2_quad_clean.evt
Size (bytes)1,255,155,840179,844,480
Size1.2 GB 171.5 MB
Events in quadrant A8,061,3241,175,510
Events in quadrant B10,024,0131,161,640
Events in quadrant C6,175,3241,176,694
Events in quadrant D12,866,9241,025,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326220
B0385150
C0269520
D0470440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131126364.850519%
B1311312329.395257%
C131121250.953325%
D13112224517.121721%

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 14707 13116 368 368 2.50% 2.81%
B 14708 13117 785 785 5.34% 5.98%
C 14707 13116 1 1 0.01% 0.01%
D 14707 13114 1812 1812 12.32% 13.82%

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 6 16 2151916 7066.38 1525 1490 304.3
A 13 254 20797 63.44 1525 1490 304.3
A 15 173 14616 43.13 1525 1490 304.3
B 3 112 3066287 10717.54 1502 1460 286.0
B 3 64 992186 3464.52 1502 1460 286.0
B 0 190 39976 134.69 1502 1460 286.0
C 14 238 236728 670.78 1498 1507 350.7
C 3 233 45842 126.43 1498 1507 350.7
C 9 54 23031 61.38 1498 1507 350.7
D 12 235 6058476 18132.29 1389 1349 334.1
D 8 195 409396 1221.51 1389 1349 334.1
D 12 233 398802 1189.79 1389 1349 334.1

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