ASTROSAT CZTI

Data Quality Report

Orbit 20938

Creation date: 2024-06-27T18:21:25.956998
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/AS1A05_088T05_9000003088_20938cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20938cztM0_level2_quad_clean.evt
Size (bytes)317,606,40057,513,600
Size302.9 MB 54.8 MB
Events in quadrant A2,113,558364,365
Events in quadrant B2,321,739367,254
Events in quadrant C2,173,497352,807
Events in quadrant D2,703,174340,476

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091781
B097481
C092221
D0110713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4498330.733659%
B4498511.133837%
C4498481.067141%
D44971262.801868%

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 5238 4499 0 0 0.00% 0.00%
B 5238 4499 2 2 0.04% 0.04%
C 5238 4499 0 0 0.00% 0.00%
D 5237 4498 103 103 1.97% 2.29%

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 0 226 4818 37.93 549 537 112.9
A 3 137 4565 35.69 549 537 112.9
A 12 194 3917 29.95 549 537 112.9
B 7 220 90616 840.87 546 531 107.1
B 0 229 31093 285.27 546 531 107.1
B 3 64 27238 249.29 546 531 107.1
C 14 238 82049 655.38 526 529 124.4
C 5 4 17492 136.37 526 529 124.4
C 8 128 6140 45.11 526 529 124.4
D 9 1 405957 3149.33 530 515 128.7
D 1 20 78051 602.27 530 515 128.7
D 5 222 65801 507.12 530 515 128.7

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