ASTROSAT CZTI

Data Quality Report

Orbit 22731

Creation date: 2024-06-27T18:44:58.146572
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/AS1A08_007T01_9000003362_22731cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22731cztM0_level2_quad_clean.evt
Size (bytes)491,817,60099,469,440
Size469.0 MB 94.9 MB
Events in quadrant A3,351,228642,521
Events in quadrant B3,550,057644,435
Events in quadrant C3,368,340619,088
Events in quadrant D4,137,144606,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01473
B01484
C01484
D01473

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014866157
B015343178
C014891159
D017501206

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7196360.500278%
B7188670.932109%
C7193670.931461%
D71901251.738526%

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 7790 7207 1 1 0.01% 0.01%
B 7790 7202 3 3 0.04% 0.04%
C 7790 7204 0 0 0.00% 0.00%
D 7790 7200 61 61 0.78% 0.85%

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 12810 68.04 865 846 175.8
A 0 23 9614 49.86 865 846 175.8
A 0 226 8320 42.5 865 846 175.8
B 0 228 49807 297.43 861 841 164.6
B 0 230 41345 246.03 861 841 164.6
B 0 197 37911 225.17 861 841 164.6
C 14 238 128423 661.53 823 828 192.9
C 10 22 15814 77.69 823 828 192.9
C 0 207 6083 27.24 823 828 192.9
D 12 233 382297 1877.17 829 804 203.2
D 1 52 267854 1314.04 829 804 203.2
D 12 227 173955 852.0 829 804 203.2

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