ASTROSAT CZTI

Data Quality Report

Orbit 12693

Creation date: 2024-06-27T16:31:09.279539
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/AS1A04_174T01_9000001876_12693cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12693cztM0_level2_quad_clean.evt
Size (bytes)507,029,760101,384,640
Size483.5 MB 96.7 MB
Events in quadrant A3,078,508713,391
Events in quadrant B5,654,618580,721
Events in quadrant C3,027,923690,957
Events in quadrant D3,186,927665,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128142
B0206721
C0127221
D0132881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5995711.184320%
B5995117519.599666%
C5995570.950792%
D5995741.234362%

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 7276 5997 0 0 0.00% 0.00%
B 7276 5997 936 936 12.86% 15.61%
C 7276 5997 12 12 0.16% 0.20%
D 7276 5997 11 11 0.15% 0.18%

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 12 189 30290 186.98 784 772 157.9
A 8 15 15796 95.17 784 772 157.9
A 9 143 10501 61.63 784 772 157.9
B 4 239 2819387 22287.14 677 664 126.5
B 3 64 69722 546.03 677 664 126.5
B 0 219 29780 230.22 677 664 126.5
C 15 208 102937 592.91 748 755 172.3
C 13 61 5611 28.18 748 755 172.3
C 1 5 4098 19.4 748 755 172.3
D 1 52 127551 697.04 757 739 181.9
D 10 157 62315 338.46 757 739 181.9
D 8 195 41172 222.25 757 739 181.9

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