ASTROSAT CZTI

Data Quality Report

Orbit 34598

Creation date: 2022-02-20T19:42:55.053842
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/AS1A05_108T02_9000004914_34598cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34598cztM0_level2_quad_clean.evt
Size (bytes)352,589,76035,164,800
Size336.3 MB 33.5 MB
Events in quadrant A1,809,363218,236
Events in quadrant B2,447,121209,067
Events in quadrant C2,002,103208,584
Events in quadrant D4,176,040174,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08717
B08610
C0877
D08612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221
B0232
C0221
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086281104
B0108281366
C090991193
D0181503203

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A364670.191991%
B35991935.362601%
C3616180.497788%
D34252206.423358%

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 6233 3873 3 3 0.05% 0.08%
B 6231 3810 139 139 2.23% 3.65%
C 6233 3831 12 12 0.19% 0.31%
D 6232 3625 249 249 4.00% 6.87%

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 10 83 24893 263.47 454 446 92.8
A 9 143 20600 217.2 454 446 92.8
A 13 254 6893 69.48 454 446 92.8
B 5 172 498286 5874.45 433 423 84.8
B 5 255 114745 1348.92 433 423 84.8
B 0 189 63672 746.3 433 423 84.8
C 15 214 151682 1495.06 432 437 101.2
C 0 10 52939 518.98 432 437 101.2
C 0 207 45557 446.01 432 437 101.2
D 8 195 1894917 16948.68 401 395 111.8
D 7 38 444692 3974.75 401 395 111.8
D 13 249 105560 940.82 401 395 111.8

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