ASTROSAT CZTI

Data Quality Report

Orbit 16731

Creation date: 2024-06-27T17:26:56.125687
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_202T01_9000002484_16731cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16731cztM0_level2_quad_clean.evt
Size (bytes)546,946,560113,152,320
Size521.6 MB 107.9 MB
Events in quadrant A4,125,454759,385
Events in quadrant B3,559,916779,021
Events in quadrant C3,396,708741,477
Events in quadrant D5,065,298716,868

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163632
B0146061
C0141391
D0194701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61632994.851533%
B61631191.930878%
C61631542.498783%
D61632443.959111%

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 7449 6165 146 146 1.96% 2.37%
B 7449 6165 14 14 0.19% 0.23%
C 7449 6165 10 10 0.13% 0.16%
D 7449 6164 149 149 2.00% 2.42%

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 991635 6220.55 811 798 159.3
A 10 234 10742 62.43 811 798 159.3
A 3 1 7479 41.94 811 798 159.3
B 15 35 178711 1200.7 812 794 148.2
B 7 220 51958 345.29 812 794 148.2
B 10 16 44947 297.97 812 794 148.2
C 0 207 150972 857.28 773 779 175.2
C 14 238 124524 706.32 773 779 175.2
C 3 233 106297 602.28 773 779 175.2
D 12 110 1247769 6692.35 784 763 186.3
D 2 16 222428 1189.62 784 763 186.3
D 1 52 191490 1023.58 784 763 186.3

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