ASTROSAT CZTI

Data Quality Report

Orbit 17306

Creation date: 2024-06-27T17:34:47.335894
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/AS1A05_010T02_9000002556_17306cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17306cztM0_level2_quad_clean.evt
Size (bytes)576,020,16071,069,760
Size549.3 MB 67.8 MB
Events in quadrant A3,238,644436,905
Events in quadrant B3,243,623439,394
Events in quadrant C3,231,748418,529
Events in quadrant D7,272,503385,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140172
B0139922
C0140142
D0263532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6766981.448419%
B67661011.492758%
C67661221.803133%
D676689913.287023%

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 6767 3 3 0.04% 0.04%
B 7697 6767 0 0 0.00% 0.00%
C 7697 6767 1 1 0.01% 0.01%
D 7697 6767 682 682 8.86% 10.08%

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 4 2 34527 201.99 827 808 166.9
A 0 23 22885 132.25 827 808 166.9
A 0 226 8368 45.29 827 808 166.9
B 12 111 19762 119.2 825 802 159.1
B 11 111 17205 103.13 825 802 159.1
B 14 111 15168 90.32 825 802 159.1
C 14 238 123127 656.21 791 796 186.4
C 3 233 20086 103.48 791 796 186.4
C 13 61 5436 24.89 791 796 186.4
D 5 222 3813679 20372.78 774 751 187.2
D 11 176 376670 2008.57 774 751 187.2
D 13 170 86426 457.77 774 751 187.2

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