ASTROSAT CZTI

Data Quality Report

Orbit 18295

Creation date: 2024-06-27T17:47:59.837133
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/AS1A06_006T01_9000002720_18295cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18295cztM0_level2_quad_clean.evt
Size (bytes)565,012,80063,509,760
Size538.8 MB 60.6 MB
Events in quadrant A3,376,815385,166
Events in quadrant B3,352,470391,261
Events in quadrant C3,392,616379,900
Events in quadrant D6,573,805337,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136292
B0135892
C0137652
D0236662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6141691.123596%
B6141560.911904%
C61411101.791239%
D614069511.319218%

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 7506 6142 9 9 0.12% 0.15%
B 7506 6142 0 0 0.00% 0.00%
C 7506 6142 16 16 0.21% 0.26%
D 7505 6141 665 665 8.86% 10.83%

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 9 143 76528 448.36 846 832 168.8
A 15 174 46021 267.66 846 832 168.8
A 0 226 7449 39.19 846 832 168.8
B 12 111 17541 105.09 850 832 159.0
B 11 111 14755 87.57 850 832 159.0
B 0 189 12990 76.47 850 832 159.0
C 14 238 129569 687.4 818 826 187.3
C 0 207 72640 383.43 818 826 187.3
C 13 61 5759 26.34 818 826 187.3
D 7 238 2843797 14840.25 799 780 191.6
D 10 199 377297 1965.38 799 780 191.6
D 1 52 160200 832.16 799 780 191.6

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