ASTROSAT CZTI

Data Quality Report

Orbit 15345

Creation date: 2024-06-27T17:07:11.868518
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/AS1T02_073T01_9000002260_15345cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15345cztM0_level2_quad_clean.evt
Size (bytes)503,213,76091,897,920
Size479.9 MB 87.6 MB
Events in quadrant A3,180,752583,037
Events in quadrant B3,279,538593,489
Events in quadrant C4,035,323583,313
Events in quadrant D4,289,336555,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139983
B0141362
C0162682
D0173792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67021011.507013%
B67021341.999403%
C67021111.656222%
D67021321.969561%

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 8893 6705 0 0 0.00% 0.00%
B 8893 6705 1 1 0.01% 0.01%
C 8893 6705 6 6 0.07% 0.09%
D 8893 6705 36 36 0.40% 0.54%

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 0 226 7105 37.73 824 804 167.0
A 12 194 6041 31.36 824 804 167.0
A 3 137 5805 29.94 824 804 167.0
B 4 173 58841 365.87 823 802 158.6
B 12 111 19145 115.63 823 802 158.6
B 11 111 16365 98.11 823 802 158.6
C 3 233 447160 2373.24 812 817 188.1
C 7 247 422371 2241.44 812 817 188.1
C 13 61 5685 25.88 812 817 188.1
D 7 223 1206042 6124.01 809 788 196.8
D 2 234 26010 128.16 809 788 196.8
D 13 104 12024 57.09 809 788 196.8

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