ASTROSAT CZTI

Data Quality Report

Orbit 26387

Creation date: 2024-06-27T19:28:25.284837
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/AS1A09_088T01_9000003812_26387cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26387cztM0_level2_quad_clean.evt
Size (bytes)587,566,080114,972,480
Size560.3 MB 109.6 MB
Events in quadrant A3,553,238785,335
Events in quadrant B3,412,583813,547
Events in quadrant C4,389,195743,648
Events in quadrant D6,018,253705,211

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144180
B0140500
C0172490
D0220300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62241241.992288%
B6224671.076478%
C62243094.964653%
D622479012.692802%

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 7579 6225 51 51 0.67% 0.82%
B 7579 6225 0 0 0.00% 0.00%
C 7579 6225 95 95 1.25% 1.53%
D 7579 6224 630 630 8.31% 10.12%

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 0 13 266668 1597.29 851 839 166.4
A 13 254 10456 57.79 851 839 166.4
A 0 226 7414 39.51 851 839 166.4
B 0 230 31982 199.09 861 844 156.4
B 5 172 26666 165.1 861 844 156.4
B 12 111 17774 108.24 861 844 156.4
C 3 233 1012394 5509.04 807 816 183.6
C 14 238 134602 728.6 807 816 183.6
C 2 16 91522 493.98 807 816 183.6
D 7 80 1767368 9590.18 785 769 184.2
D 1 52 1152255 6250.97 785 769 184.2
D 12 233 121373 654.71 785 769 184.2

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