ASTROSAT CZTI

Data Quality Report

Orbit 20230303_A12_068T01_9000005526_level2

Creation date: 2023-03-08T10:56:04.094830
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/AS1A12_068T01_9000005526cztM0_level2.fits modeM0/AS1A12_068T01_9000005526cztM0_level2_quad_clean.evt
Size (bytes)337,164,480355,426,560
Size321.5 MB 339.0 MB
Events in quadrant A2,051,5682,231,770
Events in quadrant B2,010,1022,264,682
Events in quadrant C1,725,6481,651,015
Events in quadrant D1,781,5621,980,578

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07880
B07880
C07880
D07880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01650
C01650
D01650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0897340
B0857250
C01765250
D0940530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A383768732.274859%
B383767451.941317%
C383761201331.303419%
D3837611913.103502%

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 58393 38362 0 0 0.00% 0.00%
B 58393 38361 0 0 0.00% 0.00%
C 58393 38254 0 0 0.00% 0.00%
D 58393 38350 0 0 0.00% 0.00%

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 29 1742 9.35 535 502 132.6
A 7 110 1742 9.35 535 502 132.6
A 9 19 1632 8.52 535 502 132.6
B 2 9 1842 12.47 531 505 107.2
B 3 80 1501 9.29 531 505 107.2
B 5 128 1428 8.61 531 505 107.2
C 1 81 1420 8.25 456 427 120.3
C 1 80 1361 7.76 456 427 120.3
C 3 202 1359 7.75 456 427 120.3
D 7 3 1322 6.28 510 464 136.6
D 10 189 1318 6.25 510 464 136.6
D 6 231 1283 6.0 510 464 136.6

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