ASTROSAT CZTI

Data Quality Report

Orbit 41499

Creation date: 2024-06-27T22:29:49.382711
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_035T02_9000005676_41499cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41499cztM0_level2_quad_clean.evt
Size (bytes)378,941,76089,910,720
Size361.4 MB 85.7 MB
Events in quadrant A2,973,741631,876
Events in quadrant B2,640,285624,522
Events in quadrant C3,306,095569,441
Events in quadrant D4,688,260519,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121223
B0114472
C0131302
D0175072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5381200.371678%
B5381170.315926%
C53812344.348634%
D538160511.243263%

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 7084 5382 7 7 0.10% 0.13%
B 7084 5382 5 5 0.07% 0.09%
C 7084 5382 226 226 3.19% 4.20%
D 7084 5382 543 543 7.67% 10.09%

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 10 83 540388 4268.89 607 594 126.4
A 2 79 73666 577.88 607 594 126.4
A 13 254 10942 81.84 607 594 126.4
B 0 190 181099 1564.29 597 581 115.4
B 0 245 41881 357.89 597 581 115.4
B 4 81 24474 207.05 597 581 115.4
C 0 10 595616 4493.27 565 568 132.4
C 15 214 222520 1675.98 565 568 132.4
C 9 54 134429 1010.8 565 568 132.4
D 12 16 1595944 11428.45 559 542 139.6
D 12 79 377150 2697.78 559 542 139.6
D 12 6 164054 1171.3 559 542 139.6

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