ASTROSAT CZTI

Data Quality Report

Orbit 37066

Creation date: 2024-06-27T21:35:06.243484
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/AS1A09_026T03_9000005280_37066cztM0_level2.evt modeM0/AS1A09_026T03_9000005280_37066cztM0_level2_quad_clean.evt
Size (bytes)751,135,68069,940,800
Size716.3 MB 66.7 MB
Events in quadrant A3,300,967488,403
Events in quadrant B5,436,353457,852
Events in quadrant C3,698,638477,494
Events in quadrant D9,877,261243,614

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136613
B0204972
C0147262
D0337292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6430250.388802%
B643070010.886470%
C64301372.130638%
D6430273342.503888%

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 9386 6432 18 18 0.19% 0.28%
B 9386 6431 514 514 5.48% 7.99%
C 9386 6432 132 132 1.41% 2.05%
D 9385 6431 2644 2644 28.17% 41.11%

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 293247 1928.86 746 728 151.7
A 9 143 75500 493.04 746 728 151.7
A 7 3 20512 130.46 746 728 151.7
B 5 184 2313688 16931.08 713 696 136.6
B 0 229 214871 1567.76 713 696 136.6
B 5 255 22000 155.95 713 696 136.6
C 0 10 318675 1883.94 720 724 168.8
C 15 214 273601 1616.87 720 724 168.8
C 1 23 142075 837.54 720 724 168.8
D 12 17 6413052 48779.77 528 513 131.5
D 6 112 364135 2766.05 528 513 131.5
D 12 235 351499 2669.93 528 513 131.5

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