ASTROSAT CZTI

Data Quality Report

Orbit 19674

Creation date: 2024-06-27T18:05:39.835150
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/AS1T03_037T01_9000002930_19674cztM0_level2.evt modeM0/AS1T03_037T01_9000002930_19674cztM0_level2_quad_clean.evt
Size (bytes)494,772,480105,986,880
Size471.9 MB 101.1 MB
Events in quadrant A3,365,940690,311
Events in quadrant B4,015,303694,054
Events in quadrant C3,463,604675,729
Events in quadrant D3,662,109660,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146472
B0165512
C0145782
D0156472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70151472.095510%
B70153124.447612%
C70151772.523165%
D70151992.836778%

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 7485 7016 4 4 0.05% 0.06%
B 7485 7015 119 119 1.59% 1.70%
C 7485 7015 0 0 0.00% 0.00%
D 7485 7016 86 86 1.15% 1.23%

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 5 16 113070 670.75 833 814 167.4
A 11 29 41680 244.18 833 814 167.4
A 0 226 7204 38.18 833 814 167.4
B 3 112 695817 4449.45 824 801 156.2
B 7 220 42482 266.84 824 801 156.2
B 12 111 18667 114.38 824 801 156.2
C 14 238 126835 665.82 810 813 189.3
C 3 233 112939 592.4 810 813 189.3
C 9 221 56942 296.55 810 813 189.3
D 1 52 313777 1590.22 819 795 196.8
D 7 38 92998 468.47 819 795 196.8
D 12 218 83607 420.76 819 795 196.8

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