ASTROSAT CZTI

Data Quality Report

Orbit 15762

Creation date: 2024-06-27T17:13:09.391336
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/AS1T02_088T01_9000002332_15762cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15762cztM0_level2_quad_clean.evt
Size (bytes)436,495,68079,747,200
Size416.3 MB 76.1 MB
Events in quadrant A3,060,754504,860
Events in quadrant B3,240,935517,054
Events in quadrant C3,131,072489,189
Events in quadrant D3,367,062472,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128353
B0132542
C0128692
D0139842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172220.356448%
B6172460.745301%
C6172450.729099%
D6172821.328581%

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 7488 6174 0 0 0.00% 0.00%
B 7488 6174 2 2 0.03% 0.03%
C 7488 6174 0 0 0.00% 0.00%
D 7488 6174 64 64 0.85% 1.04%

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 7795 43.83 793 780 160.0
A 0 226 7179 39.99 793 780 160.0
A 12 194 5806 31.41 793 780 160.0
B 5 236 37908 248.56 800 782 149.4
B 3 209 21303 137.39 800 782 149.4
B 12 111 17039 108.84 800 782 149.4
C 14 238 119479 666.54 762 768 178.1
C 3 233 19143 103.17 762 768 178.1
C 7 247 17079 91.58 762 768 178.1
D 13 104 379981 1888.55 749 737 200.8
D 1 52 54090 265.69 749 737 200.8
D 5 51 41838 204.67 749 737 200.8

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