ASTROSAT CZTI

Data Quality Report

Orbit 14579

Creation date: 2024-06-27T16:57:05.361498
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/AS1A04_089T01_9000002146_14579cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14579cztM0_level2_quad_clean.evt
Size (bytes)736,680,960101,004,480
Size702.6 MB 96.3 MB
Events in quadrant A7,467,724616,154
Events in quadrant B4,392,739651,127
Events in quadrant C5,482,781627,450
Events in quadrant D4,434,068614,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275143
B0182542
C0220532
D0184492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78947108.994173%
B78942393.027616%
C78941201.520142%
D78941702.153534%

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 9240 7897 155 155 1.68% 1.96%
B 9240 7897 64 64 0.69% 0.81%
C 9240 7897 1 1 0.01% 0.01%
D 9240 7897 121 121 1.31% 1.53%

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 0 23 3092934 15631.67 966 944 197.8
A 8 15 338007 1704.03 966 944 197.8
A 0 226 196058 986.41 966 944 197.8
B 10 16 382973 2019.77 986 960 189.1
B 3 209 40087 206.87 986 960 189.1
B 0 189 29713 152.02 986 960 189.1
C 3 233 1708585 7612.22 959 965 224.3
C 14 225 18137 76.55 959 965 224.3
C 3 232 9289 37.11 959 965 224.3
D 10 199 417293 1753.97 965 937 237.4
D 12 110 188460 789.97 965 937 237.4
D 13 122 80307 334.36 965 937 237.4

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