ASTROSAT CZTI

Data Quality Report

Orbit 13435

Creation date: 2024-06-27T16:40:45.923169
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/AS1A04_103T01_9000001988_13435cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13435cztM0_level2_quad_clean.evt
Size (bytes)578,427,840105,644,160
Size551.6 MB 100.8 MB
Events in quadrant A3,733,056674,425
Events in quadrant B4,044,035686,726
Events in quadrant C3,674,607667,490
Events in quadrant D5,534,292625,527

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164253
B0172532
C0161952
D0218672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7844540.688424%
B78441421.810301%
C7844110.140235%
D78443794.831719%

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 9585 7847 14 14 0.15% 0.18%
B 9585 7847 46 46 0.48% 0.59%
C 9585 7847 0 0 0.00% 0.00%
D 9585 7847 309 309 3.22% 3.94%

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 69 43855 224.8 946 925 191.0
A 1 162 29831 151.36 946 925 191.0
A 1 178 9942 47.22 946 925 191.0
B 4 142 178011 985.65 949 925 179.7
B 3 64 64820 355.63 949 925 179.7
B 3 209 28129 151.41 949 925 179.7
C 3 233 87076 404.37 919 922 213.1
C 13 61 6592 26.61 919 922 213.1
C 0 207 4201 15.39 919 922 213.1
D 13 249 1607996 7422.35 891 867 216.5
D 8 195 404356 1863.47 891 867 216.5
D 2 136 88800 406.11 891 867 216.5

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