ASTROSAT CZTI

Data Quality Report

Orbit 21132

Creation date: 2024-06-27T18:23:55.998628
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/AS1A06_009T03_9000003122_21132cztM0_level2.evt modeM0/AS1A06_009T03_9000003122_21132cztM0_level2_quad_clean.evt
Size (bytes)779,126,400120,890,880
Size743.0 MB 115.3 MB
Events in quadrant A6,215,771767,343
Events in quadrant B4,909,996821,157
Events in quadrant C4,449,757777,256
Events in quadrant D7,438,837697,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277833725
B0230333141
C0214652916
D0338575944

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212
B0245
C0234
D0245

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020626
B020731
C021032
D020521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86074625.367724%
B8620820.951276%
C86751341.544669%
D84275836.918239%

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 12736 9114 290 290 2.28% 3.18%
B 12736 9118 11 11 0.09% 0.12%
C 12736 9162 22 22 0.17% 0.24%
D 12735 8972 459 459 3.60% 5.12%

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 15 192 1979631 8982.12 1099 1081 220.3
A 13 254 11892 49.08 1099 1081 220.3
A 0 226 9796 39.56 1099 1081 220.3
B 0 182 140637 660.95 1130 1105 211.1
B 0 219 109434 513.15 1130 1105 211.1
B 7 220 105557 494.78 1130 1105 211.1
C 14 238 171378 680.61 1074 1085 250.2
C 0 10 78562 309.65 1074 1085 250.2
C 0 207 7934 27.37 1074 1085 250.2
D 1 52 956942 3837.75 1022 996 249.1
D 5 222 737510 2956.82 1022 996 249.1
D 1 239 640850 2568.76 1022 996 249.1

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