ASTROSAT CZTI

Data Quality Report

Orbit 14155

Creation date: 2024-06-27T16:51:09.589880
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/AS1G08_045T01_9000002092_14155cztM0_level2.evt modeM0/AS1G08_045T01_9000002092_14155cztM0_level2_quad_clean.evt
Size (bytes)609,465,60068,276,160
Size581.2 MB 65.1 MB
Events in quadrant A3,597,802423,416
Events in quadrant B6,864,078395,912
Events in quadrant C3,629,290404,229
Events in quadrant D3,926,906390,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147143
B0247072
C0144822
D0160472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493851.309102%
B6493141221.746496%
C6493600.924072%
D64931101.694132%

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 7809 6495 3 3 0.04% 0.05%
B 7809 6494 851 851 10.90% 13.10%
C 7809 6495 0 0 0.00% 0.00%
D 7809 6495 34 34 0.44% 0.52%

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 12 189 78388 429.46 899 882 180.5
A 9 143 57617 314.37 899 882 180.5
A 0 226 8025 39.58 899 882 180.5
B 0 85 3517123 23216.83 811 795 151.5
B 0 189 102958 674.54 811 795 151.5
B 3 209 30408 195.52 811 795 151.5
C 3 233 299562 1538.49 854 860 194.2
C 13 61 6103 27.0 854 860 194.2
C 10 22 3029 11.17 854 860 194.2
D 8 195 234270 1157.08 857 839 201.7
D 2 152 173574 856.22 857 839 201.7
D 15 0 138913 684.41 857 839 201.7

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