ASTROSAT CZTI

Data Quality Report

Orbit 11897

Creation date: 2024-06-27T16:19:41.231763
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/AS1A04_130T01_9000001762_11897cztM0_level2.evt modeM0/AS1A04_130T01_9000001762_11897cztM0_level2_quad_clean.evt
Size (bytes)503,233,92087,194,880
Size479.9 MB 83.2 MB
Events in quadrant A3,804,270561,156
Events in quadrant B4,457,345548,383
Events in quadrant C2,930,976566,073
Events in quadrant D3,631,107536,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154193
B0171822
C0126682
D0146302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61451221.985354%
B61454998.120423%
C6145140.227828%
D61451041.692433%

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 7466 6147 47 47 0.63% 0.76%
B 7466 6147 341 341 4.57% 5.55%
C 7466 6147 0 0 0.00% 0.00%
D 7466 6147 94 94 1.26% 1.53%

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 14 63 586172 3844.94 764 751 152.3
A 1 162 100355 654.18 764 751 152.3
A 1 178 49837 322.39 764 751 152.3
B 4 239 975489 6985.95 748 731 139.5
B 10 252 236977 1693.14 748 731 139.5
B 10 244 100847 717.52 748 731 139.5
C 13 61 5389 26.71 749 753 173.6
C 14 234 4857 23.64 749 753 173.6
C 8 128 3652 16.7 749 753 173.6
D 8 195 373272 2121.32 740 720 175.6
D 12 233 246343 1398.58 740 720 175.6
D 10 50 60533 340.58 740 720 175.6

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