ASTROSAT CZTI

Data Quality Report

Orbit 31014

Creation date: 2024-06-27T20:22:17.610556
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/AS1A10_071T52_9000004480_31014cztM0_level2.evt modeM0/AS1A10_071T52_9000004480_31014cztM0_level2_quad_clean.evt
Size (bytes)1,548,339,840241,551,360
Size1.4 GB 230.4 MB
Events in quadrant A9,132,7721,547,760
Events in quadrant B14,921,9601,531,779
Events in quadrant C10,042,2621,475,533
Events in quadrant D11,508,1301,446,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392884
B0581624
C0415844
D0462674

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190844342.274156%
B190856733.526330%
C190857213.777836%
D190854802.515064%

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 21039 19085 0 0 0.00% 0.00%
B 21040 19086 8 8 0.04% 0.04%
C 21040 19085 73 73 0.35% 0.38%
D 21040 19087 137 137 0.65% 0.72%

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 13 254 34371 67.32 2367 2316 476.2
A 3 137 24617 46.83 2367 2316 476.2
A 0 226 20006 37.15 2367 2316 476.2
B 6 159 5281276 11785.89 2322 2260 447.9
B 0 190 151666 333.56 2322 2260 447.9
B 0 183 119928 262.7 2322 2260 447.9
C 0 10 866198 1637.1 2244 2256 527.7
C 14 238 357240 672.66 2244 2256 527.7
C 2 114 44222 79.52 2244 2256 527.7
D 8 195 1946078 3586.01 2275 2215 542.1
D 12 218 548433 1007.66 2275 2215 542.1
D 2 250 285164 521.98 2275 2215 542.1

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