ASTROSAT CZTI

Data Quality Report

Orbit 35289

Creation date: 2022-04-08T11:45:22.870571
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/AS1A11_082T01_9000005056_35289cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35289cztM0_level2_quad_clean.evt
Size (bytes)607,374,72070,297,920
Size579.2 MB 67.0 MB
Events in quadrant A2,561,717472,599
Events in quadrant B7,523,214388,425
Events in quadrant C3,876,837461,814
Events in quadrant D4,082,598442,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107323
B0259302
C0149762
D0155572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516980.154769%
B5169204839.620816%
C51692605.029986%
D51693146.074676%

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 7083 5170 0 0 0.00% 0.00%
B 7083 5169 1669 1669 23.56% 32.29%
C 7083 5170 225 225 3.18% 4.35%
D 7083 5170 300 300 4.24% 5.80%

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 96485 755.45 634 621 126.9
A 13 254 8880 65.08 634 621 126.9
A 13 6 7330 52.87 634 621 126.9
B 5 172 2987975 30349.07 522 509 98.4
B 5 236 2475767 25145.65 522 509 98.4
B 12 111 11602 112.69 522 509 98.4
C 0 10 1117875 7884.86 616 622 141.7
C 15 214 210793 1483.25 616 622 141.7
C 4 254 100897 707.68 616 622 141.7
D 7 80 678364 4554.41 616 600 148.8
D 2 249 345003 2314.3 616 600 148.8
D 13 249 248678 1667.02 616 600 148.8

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