ASTROSAT CZTI

Data Quality Report

Orbit 31658

Creation date: 2024-06-27T20:31:11.996383
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_056T01_9000004626_31658cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31658cztM0_level2_quad_clean.evt
Size (bytes)577,915,200112,671,360
Size551.1 MB 107.5 MB
Events in quadrant A3,280,718755,984
Events in quadrant B5,536,927766,281
Events in quadrant C4,220,884723,471
Events in quadrant D4,024,213713,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139212
B0207162
C0166682
D0162542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499560.861671%
B65002473.800000%
C65003735.738462%
D65001492.292308%

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 9214 6501 2 2 0.02% 0.03%
B 9215 6502 35 35 0.38% 0.54%
C 9215 6502 139 139 1.51% 2.14%
D 9215 6502 72 72 0.78% 1.11%

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 12526 70.22 847 832 166.5
A 15 174 10250 56.55 847 832 166.5
A 3 137 8166 44.04 847 832 166.5
B 6 159 1853386 11696.92 849 830 158.4
B 10 245 193898 1219.02 849 830 158.4
B 0 190 52710 327.57 849 830 158.4
C 0 10 503646 2689.29 813 820 187.0
C 3 233 219239 1168.18 813 820 187.0
C 10 22 155880 829.31 813 820 187.0
D 8 195 655159 3403.62 823 803 192.3
D 13 249 206081 1067.75 823 803 192.3
D 2 250 31472 159.52 823 803 192.3

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