ASTROSAT CZTI

Data Quality Report

Orbit 31295

Creation date: 2024-06-27T20:26:16.305741
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/AS1T04_024T01_9000004530_31295cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31295cztM0_level2_quad_clean.evt
Size (bytes)608,005,44087,036,480
Size579.8 MB 83.0 MB
Events in quadrant A3,625,539571,196
Events in quadrant B5,397,724564,680
Events in quadrant C5,175,116508,222
Events in quadrant D3,778,259540,580

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146622
B0201372
C0200037
D0151162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6459851.315993%
B64591672.585540%
C64585909.135955%
D6458640.991019%

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 7794 6460 0 0 0.00% 0.00%
B 7794 6460 4 4 0.05% 0.06%
C 7792 6458 151 151 1.94% 2.34%
D 7793 6459 4 4 0.05% 0.06%

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 13 254 11977 59.8 940 925 184.8
A 3 137 8541 41.21 940 925 184.8
A 0 226 8190 39.31 940 925 184.8
B 6 159 1729412 10172.21 911 894 169.9
B 4 80 77269 449.46 911 894 169.9
B 12 111 19813 111.34 911 894 169.9
C 3 233 1249551 6584.44 834 842 189.6
C 0 10 292937 1540.22 834 842 189.6
C 14 238 213881 1123.35 834 842 189.6
D 8 195 326773 1514.47 892 871 215.2
D 12 233 37201 168.82 892 871 215.2
D 2 234 24659 110.54 892 871 215.2

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