ASTROSAT CZTI

Data Quality Report

Orbit 46303

Creation date: 2024-06-27T23:21:29.316440
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_072T02_9000006194_46303cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46303cztM0_level2_quad_clean.evt
Size (bytes)454,259,520105,707,520
Size433.2 MB 100.8 MB
Events in quadrant A5,656,695695,453
Events in quadrant B3,637,981723,390
Events in quadrant C3,071,146699,061
Events in quadrant D3,942,873627,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209281
B0151291
C0137851
D0162301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65192754.218438%
B65191973.021936%
C65191301.994171%
D65193114.770670%

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 7159 6520 8 8 0.11% 0.12%
B 7159 6520 13 13 0.18% 0.20%
C 7159 6520 10 10 0.14% 0.15%
D 7159 6520 141 141 1.97% 2.16%

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 2584876 16384.5 752 735 157.7
A 2 79 92938 584.6 752 735 157.7
A 15 223 39964 248.73 752 735 157.7
B 3 112 352425 2325.3 748 725 151.2
B 4 171 263600 1738.03 748 725 151.2
B 5 171 30685 198.08 748 725 151.2
C 12 2 96437 531.79 752 757 179.9
C 12 250 25248 136.12 752 757 179.9
C 14 67 10190 52.43 752 757 179.9
D 1 52 663221 3531.99 742 718 187.6
D 13 249 328791 1749.05 742 718 187.6
D 2 249 49236 258.66 742 718 187.6

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