ASTROSAT CZTI

Data Quality Report

Orbit 46759

Creation date: 2024-06-27T23:27:16.884361
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_034T01_9000006264_46759cztM0_level2.fits modeM0/AS1A13_034T01_9000006264_46759cztM0_level2_quad_clean.evt
Size (bytes)1,416,594,240285,684,480
Size1.3 GB 272.4 MB
Events in quadrant A19,419,6841,855,332
Events in quadrant B10,581,1851,914,385
Events in quadrant C8,368,6861,901,642
Events in quadrant D12,618,3001,685,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07059553
B04415453
C03918040
D05045525

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1877410335.502290%
B187627544.018761%
C187703711.976558%
D1877811886.326552%

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 20320 18788 227 227 1.12% 1.21%
B 20319 18779 194 194 0.95% 1.03%
C 20320 18780 11 11 0.05% 0.06%
D 20320 18786 749 749 3.69% 3.99%

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 10 83 9218953 21871.39 2039 1988 421.4
A 9 191 1732207 4105.72 2039 1988 421.4
A 13 248 387537 914.89 2039 1988 421.4
B 15 201 991978 2456.28 2039 1972 403.1
B 3 112 669067 1655.11 2039 1972 403.1
B 0 198 254525 626.6 2039 1972 403.1
C 3 233 215270 444.97 2038 2044 479.2
C 14 254 179782 370.91 2038 2044 479.2
C 12 249 15664 28.42 2038 2044 479.2
D 13 249 2100776 4202.61 2006 1944 499.4
D 1 52 1143627 2286.05 2006 1944 499.4
D 13 138 372254 741.49 2006 1944 499.4

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