ASTROSAT CZTI

Data Quality Report

Orbit 14971

Creation date: 2024-06-27T17:01:59.136822
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/AS1T02_056T01_9000002210_14971cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14971cztM0_level2_quad_clean.evt
Size (bytes)497,531,52096,739,200
Size474.5 MB 92.3 MB
Events in quadrant A3,667,302619,084
Events in quadrant B3,795,162615,980
Events in quadrant C3,469,781608,768
Events in quadrant D3,658,049596,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153142
B0157771
C0146991
D0157871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70301592.261735%
B70302483.527738%
C7030971.379801%
D70301482.105263%

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 7222 7033 2 2 0.03% 0.03%
B 7222 7033 54 54 0.75% 0.77%
C 7222 7033 0 0 0.00% 0.00%
D 7222 7033 44 44 0.61% 0.63%

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 121418 684.29 857 835 176.2
A 1 162 103750 584.03 857 835 176.2
A 1 178 47633 265.57 857 835 176.2
B 3 64 231264 1410.33 850 826 163.4
B 0 228 46211 277.77 850 826 163.4
B 7 220 38990 233.57 850 826 163.4
C 3 233 170567 867.65 833 838 195.6
C 7 247 38147 190.72 833 838 195.6
C 14 234 8224 37.76 833 838 195.6
D 9 1 141866 685.0 835 812 205.9
D 7 38 110808 534.17 835 812 205.9
D 15 0 69474 333.44 835 812 205.9

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