ASTROSAT CZTI

Data Quality Report

Orbit 18287

Creation date: 2024-06-27T17:47:53.977639
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/AS1A06_006T01_9000002720_18287cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18287cztM0_level2_quad_clean.evt
Size (bytes)604,713,60091,969,920
Size576.7 MB 87.7 MB
Events in quadrant A3,238,215592,422
Events in quadrant B3,517,375591,720
Events in quadrant C3,261,516578,205
Events in quadrant D7,823,706535,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143231
B0150241
C0143741
D0282771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6989350.500787%
B6990911.301860%
C6989590.844184%
D698992113.177851%

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 7394 6990 0 0 0.00% 0.00%
B 7395 6991 24 24 0.32% 0.34%
C 7394 6990 1 1 0.01% 0.01%
D 7394 6990 825 825 11.16% 11.80%

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 15095 83.84 837 819 170.3
A 0 226 7225 37.62 837 819 170.3
A 12 194 6708 34.58 837 819 170.3
B 0 190 173651 1067.38 831 809 161.9
B 0 197 25282 151.13 831 809 161.9
B 4 216 25101 150.01 831 809 161.9
C 14 238 119878 635.35 795 801 187.4
C 0 207 25723 132.97 795 801 187.4
C 8 128 8586 41.54 795 801 187.4
D 7 238 2724030 14276.77 774 751 190.7
D 1 52 1229864 6443.61 774 751 190.7
D 13 168 687142 3598.4 774 751 190.7

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