ASTROSAT CZTI

Data Quality Report

Orbit 15650

Creation date: 2024-06-27T17:11:38.224439
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_086T01_9000002316_15650cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15650cztM0_level2_quad_clean.evt
Size (bytes)550,860,480104,515,200
Size525.3 MB 99.7 MB
Events in quadrant A3,481,100672,585
Events in quadrant B3,539,821681,738
Events in quadrant C3,559,308669,049
Events in quadrant D5,611,758638,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151203
B0150592
C0150562
D0213702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72361682.321725%
B72361742.404643%
C72362223.067993%
D72364476.177446%

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 7697 7237 3 3 0.04% 0.04%
B 7697 7237 2 2 0.03% 0.03%
C 7697 7237 0 0 0.00% 0.00%
D 7697 7237 418 418 5.43% 5.78%

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 15 157 46980 257.12 882 862 179.4
A 13 248 18287 97.15 882 862 179.4
A 4 2 14130 73.97 882 862 179.4
B 0 219 19901 114.22 879 855 166.8
B 12 111 19517 111.91 879 855 166.8
B 0 189 18289 104.55 879 855 166.8
C 14 238 132558 672.47 849 854 195.8
C 3 233 111674 565.84 849 854 195.8
C 13 61 6081 26.69 849 854 195.8
D 1 52 2236303 10792.56 856 832 207.1
D 12 110 42641 201.85 856 832 207.1
D 2 234 29667 139.21 856 832 207.1

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