ASTROSAT CZTI

Data Quality Report

Orbit 44737

Creation date: 2024-06-27T23:05:54.764493
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/AS1A13_004T11_9000006018_44737cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44737cztM0_level2_quad_clean.evt
Size (bytes)525,202,560104,523,840
Size500.9 MB 99.7 MB
Events in quadrant A6,991,997665,892
Events in quadrant B3,511,994720,356
Events in quadrant C3,091,326707,136
Events in quadrant D5,337,726614,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256011
B0148991
C0139671
D0203961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65526209.462759%
B65531552.365329%
C6553490.747749%
D65535478.347322%

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 7517 6553 409 409 5.44% 6.24%
B 7518 6554 56 56 0.74% 0.85%
C 7518 6554 24 24 0.32% 0.37%
D 7518 6554 424 424 5.64% 6.47%

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 15 223 2357698 16056.96 706 690 146.8
A 10 83 1862039 12680.32 706 690 146.8
A 13 248 19473 127.96 706 690 146.8
B 0 189 242533 1691.65 724 703 143.0
B 4 171 190933 1330.7 724 703 143.0
B 0 219 41722 286.94 724 703 143.0
C 14 254 240541 1415.99 718 723 169.4
C 3 233 26547 152.48 718 723 169.4
C 12 2 12503 69.55 718 723 169.4
D 1 52 788485 4580.67 688 667 172.0
D 13 249 758116 4404.1 688 667 172.0
D 8 129 746444 4336.23 688 667 172.0

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