ASTROSAT CZTI

Data Quality Report

Orbit 21570

Creation date: 2024-06-27T18:29:37.811339
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_155T02_9000003200_21570cztM0_level2.evt modeM0/AS1A05_155T02_9000003200_21570cztM0_level2_quad_clean.evt
Size (bytes)491,927,04093,087,360
Size469.1 MB 88.8 MB
Events in quadrant A3,502,824584,944
Events in quadrant B3,638,211595,225
Events in quadrant C3,566,347571,786
Events in quadrant D3,698,950563,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148812
B0151422
C0149202
D0155972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72311371.894620%
B72301592.199170%
C72301602.213001%
D72311251.728668%

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 7876 7233 0 0 0.00% 0.00%
B 7875 7232 1 1 0.01% 0.01%
C 7875 7232 0 0 0.00% 0.00%
D 7876 7233 18 18 0.23% 0.25%

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 9874 48.96 906 886 183.6
A 0 226 7802 37.67 906 886 183.6
A 3 137 7531 36.2 906 886 183.6
B 0 190 32186 180.66 902 877 173.3
B 0 230 27129 151.48 902 877 173.3
B 12 111 20365 112.45 902 877 173.3
C 14 238 137827 672.51 875 882 203.6
C 3 233 10148 45.5 875 882 203.6
C 13 61 6149 25.87 875 882 203.6
D 2 136 84846 389.81 892 868 215.4
D 13 153 54154 247.34 892 868 215.4
D 1 52 46671 212.61 892 868 215.4

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