ASTROSAT CZTI

Data Quality Report

Orbit 22787

Creation date: 2024-06-27T18:45:45.469527
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/AS1T03_168T01_9000003368_22787cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22787cztM0_level2_quad_clean.evt
Size (bytes)494,280,000140,261,760
Size471.4 MB 133.8 MB
Events in quadrant A3,398,376960,531
Events in quadrant B3,530,918962,798
Events in quadrant C3,439,456916,916
Events in quadrant D4,109,004904,284

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148221
B0151111
C0150361
D0169701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7232320.442478%
B7233470.649800%
C72331001.382552%
D7233620.857182%

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 7597 7233 0 0 0.00% 0.00%
B 7598 7234 2 2 0.03% 0.03%
C 7598 7234 17 17 0.22% 0.24%
D 7598 7234 41 41 0.54% 0.57%

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 17 44128 249.01 869 853 173.8
A 13 254 14258 77.13 869 853 173.8
A 0 226 7691 39.35 869 853 173.8
B 0 230 48354 295.12 863 841 161.0
B 0 228 36973 224.43 863 841 161.0
B 12 111 18525 109.84 863 841 161.0
C 14 238 132848 686.41 823 829 192.3
C 10 22 91716 472.55 823 829 192.3
C 2 16 7031 32.25 823 829 192.3
D 2 152 433253 2120.59 839 811 203.9
D 1 52 327018 1599.64 839 811 203.9
D 2 120 46203 222.59 839 811 203.9

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