ASTROSAT CZTI

Data Quality Report

Orbit 18442

Creation date: 2024-06-27T17:49:53.108031
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_199T01_9000002732_18442cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18442cztM0_level2_quad_clean.evt
Size (bytes)446,748,48098,216,640
Size426.1 MB 93.7 MB
Events in quadrant A3,164,935628,966
Events in quadrant B3,307,310647,253
Events in quadrant C3,197,869624,757
Events in quadrant D3,403,501605,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138882
B0141712
C0139112
D0146542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6718170.253052%
B6718420.625186%
C6718490.729384%
D6718390.580530%

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 7883 6718 8 8 0.10% 0.12%
B 7883 6718 12 12 0.15% 0.18%
C 7882 6717 0 0 0.00% 0.00%
D 7882 6717 27 27 0.34% 0.40%

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 4 2 40030 239.86 810 792 163.6
A 14 238 12104 69.15 810 792 163.6
A 0 226 7055 38.29 810 792 163.6
B 10 245 101658 649.89 816 797 155.2
B 12 111 17947 110.5 816 797 155.2
B 11 111 15677 95.88 816 797 155.2
C 14 238 124154 680.56 781 786 181.3
C 3 233 26383 141.21 781 786 181.3
C 13 61 5589 26.5 781 786 181.3
D 1 52 278265 1465.28 782 759 189.4
D 12 110 95480 500.14 782 759 189.4
D 13 168 43324 224.75 782 759 189.4

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