ASTROSAT CZTI

Data Quality Report

Orbit 20837

Creation date: 2024-06-27T18:20:06.653993
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_013T01_9000003070_20837cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20837cztM0_level2_quad_clean.evt
Size (bytes)542,191,68091,848,960
Size517.1 MB 87.6 MB
Events in quadrant A3,232,650600,831
Events in quadrant B3,318,530590,860
Events in quadrant C3,134,200575,292
Events in quadrant D6,296,411562,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138631
B0139541
C0136421
D0236291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480881.358025%
B6480721.111111%
C6481871.342385%
D64811612.484185%

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 6940 6480 62 62 0.89% 0.96%
B 6940 6480 22 22 0.32% 0.34%
C 6941 6482 27 27 0.39% 0.42%
D 6941 6481 171 171 2.46% 2.64%

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 5 16 256893 1644.14 772 757 155.8
A 5 203 7850 45.53 772 757 155.8
A 0 226 6709 38.2 772 757 155.8
B 0 189 97840 660.02 765 747 147.1
B 3 64 68963 463.72 765 747 147.1
B 7 220 59119 396.8 765 747 147.1
C 9 54 150122 865.13 733 737 172.7
C 14 238 112219 645.63 733 737 172.7
C 13 61 5173 25.69 733 737 172.7
D 1 20 2856492 15855.57 742 721 180.1
D 1 52 373500 2069.71 742 721 180.1
D 1 239 73958 406.62 742 721 180.1

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