ASTROSAT CZTI

Data Quality Report

Orbit 19796

Creation date: 2024-06-27T18:07:06.530638
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_117T01_9000002958_19796cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19796cztM0_level2_quad_clean.evt
Size (bytes)579,859,20066,732,480
Size553.0 MB 63.6 MB
Events in quadrant A6,792,301381,657
Events in quadrant B3,357,609406,348
Events in quadrant C3,301,694388,911
Events in quadrant D3,665,246385,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247332
B0141922
C0139432
D0151202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562100315.284974%
B6563871.325613%
C6563781.188481%
D6563671.020875%

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 7537 6562 782 782 10.38% 11.92%
B 7538 6563 14 14 0.19% 0.21%
C 7538 6563 0 0 0.00% 0.00%
D 7538 6563 22 22 0.29% 0.34%

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 3815313 24645.15 768 752 154.8
A 15 192 15889 97.8 768 752 154.8
A 0 226 6561 37.53 768 752 154.8
B 7 220 161626 1029.15 807 786 156.3
B 12 111 18508 113.4 807 786 156.3
B 11 111 16505 100.58 807 786 156.3
C 3 233 136316 751.97 772 779 180.2
C 14 238 120197 662.54 772 779 180.2
C 8 128 12275 63.78 772 779 180.2
D 7 238 211299 1092.69 789 766 192.7
D 2 69 195597 1011.19 789 766 192.7
D 12 218 136086 702.33 789 766 192.7

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