ASTROSAT CZTI

Data Quality Report

Orbit 09625

Creation date: 2024-06-27T15:48:35.575668
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/AS1A03_033T01_9000001368_09625cztM0_level2.evt modeM0/AS1A03_033T01_9000001368_09625cztM0_level2_quad_clean.evt
Size (bytes)375,894,72080,628,480
Size358.5 MB 76.9 MB
Events in quadrant A2,596,629537,657
Events in quadrant B2,640,553526,854
Events in quadrant C2,473,617519,905
Events in quadrant D3,320,499494,847

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011812
B011812
C01184
D011810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0132
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120681324
B0122501405
C0119501293
D0156662460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5199641.231006%
B5166721.393728%
C5207440.845016%
D5043841.665675%

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 7172 5645 0 0 0.00% 0.00%
B 7172 5634 1 1 0.01% 0.02%
C 7172 5638 0 0 0.00% 0.00%
D 7171 5536 16 16 0.22% 0.29%

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 3 1 31264 225.86 667 656 135.5
A 0 226 6262 41.37 667 656 135.5
A 12 194 5513 35.84 667 656 135.5
B 0 214 47212 379.33 655 642 122.8
B 0 229 28972 230.76 655 642 122.8
B 10 245 14913 116.24 655 642 122.8
C 10 22 5083 30.66 632 637 145.0
C 13 61 4761 28.44 632 637 145.0
C 14 67 1710 7.4 632 637 145.0
D 8 195 536859 3612.64 622 609 148.4
D 1 52 217171 1458.95 622 609 148.4
D 10 172 70580 471.38 622 609 148.4

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