ASTROSAT CZTI

Data Quality Report

Orbit 25010

Creation date: 2024-06-27T19:12:42.442149
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_027T12_9000003664_25010cztM0_level2.evt modeM0/AS1A07_027T12_9000003664_25010cztM0_level2_quad_clean.evt
Size (bytes)450,449,28097,856,640
Size429.6 MB 93.3 MB
Events in quadrant A3,257,108638,427
Events in quadrant B3,320,867655,445
Events in quadrant C3,379,617617,585
Events in quadrant D3,247,694603,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138642
B0139232
C0141242
D0139372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427560.871324%
B6427681.058036%
C64261141.774043%
D6426470.731404%

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 7632 6428 0 0 0.00% 0.00%
B 7632 6428 1 1 0.01% 0.02%
C 7631 6427 0 0 0.00% 0.00%
D 7631 6427 3 3 0.04% 0.05%

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 20117 115.88 840 823 166.5
A 13 254 9222 50.44 840 823 166.5
A 3 137 7365 39.29 840 823 166.5
B 0 190 27065 166.29 839 820 157.8
B 12 111 18983 115.08 839 820 157.8
B 11 111 17098 103.14 839 820 157.8
C 14 238 131538 687.4 810 816 190.2
C 7 247 71853 373.55 810 816 190.2
C 2 16 13785 68.2 810 816 190.2
D 8 195 92854 468.84 817 794 196.4
D 2 234 26971 133.31 817 794 196.4
D 10 70 23003 113.1 817 794 196.4

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