ASTROSAT CZTI

Data Quality Report

Orbit 04304

Creation date: 2024-06-27T14:40:09.854658
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/AS1G05_219T01_9000000540_04304cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04304cztM0_level2_quad_clean.evt
Size (bytes)527,523,84084,971,520
Size503.1 MB 81.0 MB
Events in quadrant A4,024,331513,626
Events in quadrant B3,806,817513,061
Events in quadrant C3,472,794510,437
Events in quadrant D4,141,175492,350

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175253
B0166812
C0161682
D0181632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78191311.675406%
B78191291.649827%
C7819300.383681%
D78191281.637038%

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 8234 7821 12 12 0.15% 0.15%
B 8234 7822 0 0 0.00% 0.00%
C 8234 7822 3 3 0.04% 0.04%
D 8234 7822 92 92 1.12% 1.18%

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 13 251 497978 2646.34 906 882 187.8
A 0 50 20856 106.33 906 882 187.8
A 12 194 9184 44.19 906 882 187.8
B 15 204 97092 534.88 918 894 179.8
B 14 167 75352 414.0 918 894 179.8
B 3 0 30381 163.95 918 894 179.8
C 10 65 43932 209.5 875 877 205.5
C 9 247 7527 32.36 875 877 205.5
C 13 61 7185 30.69 875 877 205.5
D 13 223 182807 857.65 868 842 212.2
D 13 53 139901 655.42 868 842 212.2
D 2 136 139071 651.51 868 842 212.2

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