ASTROSAT CZTI

Data Quality Report

Orbit 20536

Creation date: 2024-06-27T18:16:40.321995
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_176T04_9000003034_20536cztM0_level2.evt modeM0/AS1A05_176T04_9000003034_20536cztM0_level2_quad_clean.evt
Size (bytes)487,745,28096,240,960
Size465.2 MB 91.8 MB
Events in quadrant A3,556,522641,766
Events in quadrant B3,788,554633,666
Events in quadrant C3,116,673617,471
Events in quadrant D3,903,413603,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146401
B0153331
C0133321
D0156471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59861712.856666%
B59861823.040428%
C59861131.887738%
D59872103.507600%

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 7061 5987 71 71 1.01% 1.19%
B 7061 5987 75 75 1.06% 1.25%
C 7061 5987 17 17 0.24% 0.28%
D 7062 5988 154 154 2.18% 2.57%

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 6 16 757376 5183.1 722 706 146.0
A 11 29 11584 74.51 722 706 146.0
A 8 205 10953 70.19 722 706 146.0
B 7 220 382126 2876.44 713 695 132.6
B 0 197 242543 1823.82 713 695 132.6
B 0 189 144561 1084.92 713 695 132.6
C 0 207 180524 1111.23 696 700 161.8
C 14 238 109540 672.58 696 700 161.8
C 9 221 77396 473.95 696 700 161.8
D 12 238 518971 3052.16 703 683 169.8
D 13 153 183639 1077.41 703 683 169.8
D 2 184 141911 831.68 703 683 169.8

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