ASTROSAT CZTI

Data Quality Report

Orbit 16663

Creation date: 2024-06-27T17:25:51.122163
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_078T01_9000002462_16663cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16663cztM0_level2_quad_clean.evt
Size (bytes)462,597,120130,098,240
Size441.2 MB 124.1 MB
Events in quadrant A3,341,137875,106
Events in quadrant B3,904,701887,973
Events in quadrant C3,169,535851,114
Events in quadrant D3,118,142838,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148333
B0162292
C0141962
D0145012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7009400.570695%
B7009861.226994%
C7009310.442288%
D7009300.428021%

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 7640 7011 23 23 0.30% 0.33%
B 7640 7011 23 23 0.30% 0.33%
C 7640 7011 0 0 0.00% 0.00%
D 7640 7011 12 12 0.16% 0.17%

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 15 174 182801 1119.34 803 785 162.6
A 12 96 35532 213.68 803 785 162.6
A 9 143 16228 94.97 803 785 162.6
B 15 35 324049 2124.25 808 787 152.2
B 0 229 161647 1057.06 808 787 152.2
B 0 197 68874 447.42 808 787 152.2
C 14 238 120083 666.21 771 773 179.1
C 7 247 13334 70.14 771 773 179.1
C 3 233 13280 69.84 771 773 179.1
D 15 0 40362 208.16 776 752 190.3
D 2 16 32374 166.18 776 752 190.3
D 2 234 31634 162.3 776 752 190.3

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