ASTROSAT CZTI

Data Quality Report

Orbit 24250

Creation date: 2024-06-27T19:03:57.485494
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/AS1A07_118T01_9000003586_24250cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24250cztM0_level2_quad_clean.evt
Size (bytes)722,191,68093,767,040
Size688.7 MB 89.4 MB
Events in quadrant A3,965,987588,766
Events in quadrant B3,767,269606,161
Events in quadrant C6,057,912573,032
Events in quadrant D7,568,517544,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165611
B0158981
C0229651
D0276651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75653384.467944%
B75662793.687550%
C75666758.921491%
D7566127616.864922%

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 7580 7566 42 42 0.55% 0.56%
B 7581 7567 2 2 0.03% 0.03%
C 7581 7566 244 244 3.22% 3.22%
D 7580 7565 985 985 12.99% 13.02%

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 6 16 238958 1238.09 943 922 192.3
A 3 1 94277 485.56 943 922 192.3
A 13 254 11754 56.34 943 922 192.3
B 4 171 58569 316.06 940 916 182.4
B 12 111 22214 116.76 940 916 182.4
B 11 111 19897 104.06 940 916 182.4
C 7 247 2382440 11217.52 899 905 212.3
C 14 238 138742 649.24 899 905 212.3
C 2 16 11617 50.46 899 905 212.3
D 7 238 1666407 7649.56 884 857 217.7
D 8 195 1400249 6427.15 884 857 217.7
D 1 52 834580 3829.13 884 857 217.7

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