ASTROSAT CZTI

Data Quality Report

Orbit 07935

Creation date: 2024-06-27T15:25:44.295190
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/AS1G06_117T01_9000001086_07935cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07935cztM0_level2_quad_clean.evt
Size (bytes)462,248,64092,160,000
Size440.8 MB 87.9 MB
Events in quadrant A3,368,201566,078
Events in quadrant B3,500,255580,388
Events in quadrant C3,254,417579,771
Events in quadrant D3,376,465553,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151993
B0154372
C0149694
D0154722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73471051.429155%
B73471321.796652%
C7346590.803158%
D7347640.871104%

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 7692 7348 3 3 0.04% 0.04%
B 7692 7348 12 12 0.16% 0.16%
C 7692 7348 0 0 0.00% 0.00%
D 7692 7348 2 2 0.03% 0.03%

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 0 128 80437 459.68 846 827 173.2
A 13 251 29294 164.37 846 827 173.2
A 0 226 7974 41.27 846 827 173.2
B 4 173 75112 450.74 856 835 164.8
B 11 51 37101 220.07 856 835 164.8
B 12 111 18486 107.11 856 835 164.8
C 13 61 6550 29.62 829 831 193.1
C 8 128 6159 27.6 829 831 193.1
C 1 16 4178 17.34 829 831 193.1
D 14 34 111504 548.31 822 795 201.9
D 5 233 97495 478.92 822 795 201.9
D 1 52 23681 113.35 822 795 201.9

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