ASTROSAT CZTI

Data Quality Report

Orbit 25871

Creation date: 2024-06-27T19:22:19.165029
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/AS1A07_068T01_9000003756_25871cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25871cztM0_level2_quad_clean.evt
Size (bytes)588,479,040103,763,520
Size561.2 MB 99.0 MB
Events in quadrant A4,617,432662,923
Events in quadrant B4,201,337660,246
Events in quadrant C3,941,375633,886
Events in quadrant D4,521,582631,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187300
B0176120
C0168540
D0189050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79671341.681938%
B79672322.912012%
C79671331.669386%
D79671642.058491%

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 8842 7969 10 10 0.11% 0.13%
B 8842 7969 96 96 1.09% 1.20%
C 8842 7969 1 1 0.01% 0.01%
D 8842 7969 81 81 0.92% 1.02%

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 13 833426 4193.42 981 960 198.5
A 13 254 11213 51.65 981 960 198.5
A 3 137 9395 42.49 981 960 198.5
B 10 245 393914 2102.22 966 939 186.9
B 12 111 23357 119.92 966 939 186.9
B 11 111 21280 108.81 966 939 186.9
C 14 238 147669 673.32 927 933 217.9
C 3 233 138900 633.08 927 933 217.9
C 14 128 28029 124.33 927 933 217.9
D 1 52 810850 3604.04 934 909 224.7
D 12 233 102552 452.29 934 909 224.7
D 7 80 52102 227.8 934 909 224.7

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