ASTROSAT CZTI

Data Quality Report

Orbit 20415

Creation date: 2024-06-27T18:15:08.630668
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/AS1A05_140T01_9000003016_20415cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20415cztM0_level2_quad_clean.evt
Size (bytes)515,076,480109,607,040
Size491.2 MB 104.5 MB
Events in quadrant A3,537,114722,490
Events in quadrant B3,832,559716,958
Events in quadrant C3,594,466690,194
Events in quadrant D4,134,554676,833

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150581
B0159851
C0151841
D0171292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7367811.099498%
B7368951.289359%
C73681051.425081%
D73672142.904846%

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 7727 7367 0 0 0.00% 0.00%
B 7728 7369 4 4 0.05% 0.05%
C 7728 7369 0 0 0.00% 0.00%
D 7727 7368 116 116 1.50% 1.57%

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 0 226 7896 37.33 915 897 187.5
A 12 16 7699 36.28 915 897 187.5
A 12 194 7667 36.11 915 897 187.5
B 10 245 170078 976.89 900 880 173.2
B 7 220 49345 279.82 900 880 173.2
B 0 189 39081 220.56 900 880 173.2
C 14 238 136348 659.76 871 881 205.3
C 0 207 28447 134.25 871 881 205.3
C 8 128 11789 53.12 871 881 205.3
D 1 52 537817 2484.7 884 861 216.1
D 13 153 162789 749.3 884 861 216.1
D 2 153 44110 200.13 884 861 216.1

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