ASTROSAT CZTI

Data Quality Report

Orbit 17238

Creation date: 2024-06-27T17:33:58.148640
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/AS1T03_063T01_9000002550_17238cztM0_level2.evt modeM0/AS1T03_063T01_9000002550_17238cztM0_level2_quad_clean.evt
Size (bytes)498,484,80069,301,440
Size475.4 MB 66.1 MB
Events in quadrant A3,458,248419,643
Events in quadrant B3,677,228424,815
Events in quadrant C3,714,869406,156
Events in quadrant D3,811,705400,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144222
B0151982
C0151552
D0156072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408841.310861%
B64081081.685393%
C64081221.903870%
D6408751.170412%

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 7708 6409 8 8 0.10% 0.12%
B 7708 6409 5 5 0.06% 0.08%
C 7708 6409 5 5 0.06% 0.08%
D 7708 6409 22 22 0.29% 0.34%

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 15 174 51905 287.7 885 869 177.4
A 0 226 7979 40.08 885 869 177.4
A 12 194 6412 31.25 885 869 177.4
B 3 209 60797 361.01 883 864 166.0
B 7 220 60175 357.26 883 864 166.0
B 15 35 57646 342.03 883 864 166.0
C 3 233 159756 817.74 843 849 194.3
C 14 238 131714 673.43 843 849 194.3
C 7 220 124381 635.7 843 849 194.3
D 1 52 165420 793.33 857 835 207.5
D 12 233 102400 489.56 857 835 207.5
D 13 189 86918 414.94 857 835 207.5

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