ASTROSAT CZTI

Data Quality Report

Orbit 20138

Creation date: 2024-06-27T18:11:44.804124
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_180T01_9000002992_20138cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20138cztM0_level2_quad_clean.evt
Size (bytes)650,332,800101,952,000
Size620.2 MB 97.2 MB
Events in quadrant A5,264,863630,744
Events in quadrant B5,848,570646,543
Events in quadrant C3,963,948642,513
Events in quadrant D4,103,772639,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203702
B0221462
C0162862
D0172262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75826478.533369%
B75827529.918227%
C75821722.268531%
D75811341.767577%

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 8697 7585 341 341 3.92% 4.50%
B 8697 7584 433 433 4.98% 5.71%
C 8697 7585 0 0 0.00% 0.00%
D 8696 7584 45 45 0.52% 0.59%

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 14 238 1364864 7158.57 940 923 190.5
A 15 192 271375 1419.45 940 923 190.5
A 13 254 8247 38.44 940 923 190.5
B 10 245 2142561 12046.48 924 904 177.8
B 7 220 29745 162.23 924 904 177.8
B 12 111 21170 113.99 924 904 177.8
C 14 238 145687 671.4 925 932 215.6
C 3 233 113253 520.96 925 932 215.6
C 8 208 73837 338.15 925 932 215.6
D 1 52 395295 1706.61 945 919 231.1
D 14 34 63185 269.45 945 919 231.1
D 7 38 38097 160.88 945 919 231.1

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