ASTROSAT CZTI

Data Quality Report

Orbit 10881

Creation date: 2024-06-27T16:05:06.510133
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_9000001572_10881cztM0_level2.evt modeM0/AS1A04_130T01_9000001572_10881cztM0_level2_quad_clean.evt
Size (bytes)337,743,36046,324,800
Size322.1 MB 44.2 MB
Events in quadrant A2,370,486273,124
Events in quadrant B2,746,868279,505
Events in quadrant C1,952,450276,298
Events in quadrant D2,858,144262,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098631
B0110241
C089061
D0114911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4415751.698754%
B44151663.759909%
C441550.113250%
D4415711.608154%

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 4415 4415 52 52 1.18% 1.18%
B 4415 4415 106 106 2.40% 2.40%
C 4415 4415 0 0 0.00% 0.00%
D 4415 4415 45 45 1.02% 1.02%

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 8 5 248160 2345.12 513 502 105.6
A 15 223 75418 709.39 513 502 105.6
A 15 239 39334 367.71 513 502 105.6
B 4 239 754376 7625.76 506 493 98.9
B 12 111 10904 105.31 506 493 98.9
B 0 187 10418 100.39 506 493 98.9
C 12 4 15692 130.76 496 499 116.2
C 13 61 3702 27.57 496 499 116.2
C 14 234 1354 7.36 496 499 116.2
D 1 52 645115 5345.39 495 481 120.6
D 5 222 137291 1134.45 495 481 120.6
D 13 138 62889 517.5 495 481 120.6

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