ASTROSAT CZTI

Data Quality Report

Orbit 22161

Creation date: 2024-06-27T18:37:37.089433
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_145T01_9000003278_22161cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22161cztM0_level2_quad_clean.evt
Size (bytes)622,500,48074,160,000
Size593.7 MB 70.7 MB
Events in quadrant A3,392,837469,153
Events in quadrant B3,490,386479,126
Events in quadrant C3,463,580460,823
Events in quadrant D8,080,871398,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138283
B0141613
C0142223
D0283253

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6272891.419005%
B62721191.897321%
C62721552.471301%
D6271158725.306969%

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 7592 6274 0 0 0.00% 0.00%
B 7592 6274 3 3 0.04% 0.05%
C 7592 6274 0 0 0.00% 0.00%
D 7591 6273 1344 1344 17.71% 21.43%

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 10291 54.06 879 865 174.4
A 0 226 7524 38.19 879 865 174.4
A 3 137 7000 35.19 879 865 174.4
B 0 230 35706 215.37 874 855 161.8
B 0 197 20189 119.48 874 855 161.8
B 12 111 19111 112.82 874 855 161.8
C 14 238 136893 705.83 845 854 192.7
C 10 22 19081 94.57 845 854 192.7
C 9 54 8096 37.57 845 854 192.7
D 1 52 5230814 29497.56 743 723 177.3
D 13 104 22405 122.29 743 723 177.3
D 2 234 20290 110.36 743 723 177.3

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