ASTROSAT CZTI

Data Quality Report

Orbit 19151

Creation date: 2024-06-27T17:59:34.572519
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_046T01_9000002838_19151cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19151cztM0_level2_quad_clean.evt
Size (bytes)457,024,32099,665,280
Size435.9 MB 95.0 MB
Events in quadrant A3,282,054640,488
Events in quadrant B3,445,315665,636
Events in quadrant C3,525,982642,893
Events in quadrant D3,148,894618,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139002
B0143423
C0143632
D0136522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6456921.425031%
B64551572.432223%
C64551071.657630%
D6456170.263321%

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 9001 6458 21 21 0.23% 0.33%
B 9000 6457 19 19 0.21% 0.29%
C 9000 6457 5 5 0.06% 0.08%
D 9001 6458 2 2 0.02% 0.03%

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 13 170 76200 456.09 819 802 165.3
A 15 174 35072 207.3 819 802 165.3
A 11 29 12125 68.49 819 802 165.3
B 7 220 134154 845.1 829 810 157.8
B 3 112 39371 244.39 829 810 157.8
B 12 111 18222 110.35 829 810 157.8
C 3 233 245374 1300.84 805 816 188.0
C 14 238 125201 661.62 805 816 188.0
C 0 207 12028 59.64 805 816 188.0
D 1 52 84865 425.87 808 786 197.4
D 2 234 25688 126.13 808 786 197.4
D 11 176 10845 50.95 808 786 197.4

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