ASTROSAT CZTI

Data Quality Report

Orbit 09894

Creation date: 2024-06-27T15:52:01.124081
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/AS1G07_046T01_9000001408_09894cztM0_level2.evt modeM0/AS1G07_046T01_9000001408_09894cztM0_level2_quad_clean.evt
Size (bytes)292,651,20059,783,040
Size279.1 MB 57.0 MB
Events in quadrant A2,020,991379,616
Events in quadrant B2,298,297380,771
Events in quadrant C1,989,482377,068
Events in quadrant D2,252,822362,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09289239
B010165330
C09270352
D09706295

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0924
B0924
C0922
D0922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4438330.743578%
B4404791.793824%
C4380310.707763%
D4420300.678733%

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 5411 4546 0 0 0.00% 0.00%
B 5410 4537 28 28 0.52% 0.62%
C 5411 4530 1 1 0.02% 0.02%
D 5411 4539 2 2 0.04% 0.04%

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 14 111 8236 71.65 521 509 107.8
A 0 226 4734 39.18 521 509 107.8
A 12 194 4116 33.45 521 509 107.8
B 4 81 236038 2344.71 514 500 100.5
B 0 85 53928 531.86 514 500 100.5
B 12 111 12006 114.54 514 500 100.5
C 10 22 14705 120.28 502 504 118.1
C 9 221 12452 101.19 502 504 118.1
C 13 61 3613 26.33 502 504 118.1
D 8 195 258483 1959.51 499 488 131.7
D 13 104 34725 260.03 499 488 131.7
D 2 14 16184 119.21 499 488 131.7

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