ASTROSAT CZTI

Data Quality Report

Orbit 05827

Creation date: 2024-06-27T14:59:35.951946
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/AS1G06_052T01_9000000754_05827cztM0_level2.evt modeM0/AS1G06_052T01_9000000754_05827cztM0_level2_quad_clean.evt
Size (bytes)591,914,880119,341,440
Size564.5 MB 113.8 MB
Events in quadrant A4,582,996750,883
Events in quadrant B4,678,625760,401
Events in quadrant C3,992,216760,080
Events in quadrant D4,075,750732,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196463
B0200292
C0182302
D0186382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8786670.762577%
B8786490.557705%
C8786390.443888%
D8786350.398361%

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 10286 8788 23 23 0.22% 0.26%
B 10286 8788 5 5 0.05% 0.06%
C 10286 8788 1 1 0.01% 0.01%
D 10286 8788 9 9 0.09% 0.10%

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 15 236 343588 1591.44 1054 1031 215.2
A 0 50 79566 364.85 1054 1031 215.2
A 15 174 46850 212.86 1054 1031 215.2
B 15 204 495709 2484.46 1044 1021 199.1
B 0 219 46291 227.36 1044 1021 199.1
B 0 214 39492 193.21 1044 1021 199.1
C 1 16 29879 123.25 1013 1019 234.2
C 13 61 7923 29.48 1013 1019 234.2
C 9 16 4134 13.3 1013 1019 234.2
D 12 233 53979 208.66 1030 998 253.9
D 2 63 38068 146.0 1030 998 253.9
D 11 241 27469 104.25 1030 998 253.9

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