ASTROSAT CZTI

Data Quality Report

Orbit 28832

Creation date: 2024-06-27T19:56:56.134456
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_121T01_9000004134_28832cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28832cztM0_level2_quad_clean.evt
Size (bytes)685,134,720119,753,280
Size653.4 MB 114.2 MB
Events in quadrant A3,383,004821,820
Events in quadrant B3,912,593849,350
Events in quadrant C4,923,099793,990
Events in quadrant D8,067,138683,614

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143792
B0160962
C0195412
D0287772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6852340.496205%
B68531762.568218%
C68534085.953597%
D6853144121.027287%

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 9177 6853 0 0 0.00% 0.00%
B 9178 6854 60 60 0.65% 0.88%
C 9178 6853 12 12 0.13% 0.18%
D 9178 6853 933 933 10.17% 13.61%

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 14 235 16860 91.93 870 855 174.1
A 13 254 13429 72.22 870 855 174.1
A 4 2 9190 47.87 870 855 174.1
B 10 245 192928 1192.1 872 851 161.1
B 5 255 168640 1041.36 872 851 161.1
B 5 172 77999 478.81 872 851 161.1
C 3 233 1327160 6759.97 838 843 196.2
C 14 238 207849 1055.07 838 843 196.2
C 14 254 109472 553.66 838 843 196.2
D 1 52 4156207 23107.66 763 745 179.8
D 8 195 800377 4446.59 763 745 179.8
D 2 250 119612 660.99 763 745 179.8

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