ASTROSAT CZTI

Data Quality Report

Orbit 25831

Creation date: 2024-06-27T19:21:53.872122
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/AS1A07_068T01_9000003756_25831cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25831cztM0_level2_quad_clean.evt
Size (bytes)1,320,258,240236,551,680
Size1.2 GB 225.6 MB
Events in quadrant A8,653,5281,522,037
Events in quadrant B8,870,2081,528,060
Events in quadrant C8,936,3871,448,274
Events in quadrant D12,286,6841,404,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373050
B0375660
C0378740
D0487920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183031660.906955%
B183042211.207386%
C183043131.710009%
D1830411026.020542%

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 20038 18306 0 0 0.00% 0.00%
B 20039 18307 7 7 0.03% 0.04%
C 20039 18307 5 5 0.02% 0.03%
D 20039 18307 1033 1033 5.15% 5.64%

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 13 66323 144.56 2219 2175 443.7
A 6 16 33701 71.05 2219 2175 443.7
A 13 254 23440 47.92 2219 2175 443.7
B 0 219 172627 406.01 2197 2144 419.9
B 12 111 52872 120.81 2197 2144 419.9
B 11 111 47860 108.88 2197 2144 419.9
C 3 233 339878 680.26 2111 2120 496.5
C 14 238 339142 678.77 2111 2120 496.5
C 7 238 29873 55.9 2111 2120 496.5
D 1 52 3804072 7625.66 2104 2052 498.6
D 12 233 366398 730.76 2104 2052 498.6
D 2 234 75455 147.22 2104 2052 498.6

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