ASTROSAT CZTI

Data Quality Report

Orbit 14161

Creation date: 2024-06-27T16:51:15.636958
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/AS1G08_045T01_9000002092_14161cztM0_level2.evt modeM0/AS1G08_045T01_9000002092_14161cztM0_level2_quad_clean.evt
Size (bytes)771,073,920104,345,280
Size735.4 MB 99.5 MB
Events in quadrant A3,917,162670,312
Events in quadrant B9,096,611670,510
Events in quadrant C3,959,528647,007
Events in quadrant D5,836,699614,577

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169123
B0325892
C0167942
D0229012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8022530.660683%
B8022185323.098978%
C8022450.560957%
D80221612.006981%

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 8603 8025 4 4 0.05% 0.05%
B 8603 8025 1004 1004 11.67% 12.51%
C 8603 8025 3 3 0.03% 0.04%
D 8603 8025 40 40 0.46% 0.50%

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 12 189 75169 362.98 991 970 204.4
A 15 69 24571 115.46 991 970 204.4
A 0 226 8875 38.67 991 970 204.4
B 0 85 5241012 29912.12 910 888 175.2
B 4 142 90915 513.9 910 888 175.2
B 0 189 86575 489.13 910 888 175.2
C 3 233 176571 781.22 960 965 224.8
C 0 207 14154 58.67 960 965 224.8
C 8 128 12065 49.38 960 965 224.8
D 8 195 964357 3886.18 945 924 247.9
D 1 52 708626 2854.64 945 924 247.9
D 12 110 274417 1103.18 945 924 247.9

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