ASTROSAT CZTI

Data Quality Report

Orbit 20240418_A13_072T01_9000006192_level2

Creation date: 2024-04-23T12:51:39.798615
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/AS1A13_072T01_9000006192cztM0_level2.fits modeM0/AS1A13_072T01_9000006192cztM0_level2_quad_clean.evt
Size (bytes)766,131,840918,201,600
Size730.6 MB 875.7 MB
Events in quadrant A4,483,1005,647,280
Events in quadrant B4,344,9345,714,782
Events in quadrant C4,601,2105,668,544
Events in quadrant D3,814,4064,825,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02790090
B02443090
C01804740
D02540490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017620
B017620
C017620
D017620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8685123702.728811%
B8685327823.203113%
C868538170.940670%
D8685268267.859347%

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 108627 86850 0 0 0.00% 0.00%
B 108627 86844 0 0 0.00% 0.00%
C 108627 86851 0 0 0.00% 0.00%
D 108628 86722 0 0 0.00% 0.00%

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 7 110 3509 7.97 1171 1092 303.3
A 15 236 3484 7.89 1171 1092 303.3
A 0 29 3423 7.69 1171 1092 303.3
B 2 9 4069 13.44 1146 1089 221.7
B 2 8 3274 9.85 1146 1089 221.7
B 3 17 3086 9.01 1146 1089 221.7
C 3 202 3653 7.88 1218 1133 319.9
C 1 81 3480 7.34 1218 1133 319.9
C 3 203 3451 7.25 1218 1133 319.9
D 12 6 2855 6.21 1092 996 299.5
D 15 47 2809 6.05 1092 996 299.5
D 10 189 2786 5.98 1092 996 299.5

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