ASTROSAT CZTI

Data Quality Report

Orbit 38627

Creation date: 2024-06-27T21:54:20.071558
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/AS1A12_061T03_9000005390_38627cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38627cztM0_level2_quad_clean.evt
Size (bytes)467,406,72097,536,960
Size445.8 MB 93.0 MB
Events in quadrant A3,299,307674,702
Events in quadrant B3,589,709682,255
Events in quadrant C3,111,909666,325
Events in quadrant D6,834,077510,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133313
B0144092
C0128002
D0243842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005470.782681%
B60051051.748543%
C6005530.882598%
D6005126421.049126%

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 7318 6006 28 28 0.38% 0.47%
B 7318 6006 54 54 0.74% 0.90%
C 7318 6006 44 44 0.60% 0.73%
D 7318 6006 1253 1253 17.12% 20.86%

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 10 83 473804 3398.48 683 670 139.2
A 9 143 145258 1038.56 683 670 139.2
A 15 174 15753 108.34 683 670 139.2
B 4 171 650665 4956.52 680 661 131.1
B 5 172 86680 655.93 680 661 131.1
B 0 183 77021 582.27 680 661 131.1
C 15 214 243269 1553.18 670 674 156.2
C 3 9 165164 1053.12 670 674 156.2
C 14 254 53093 335.61 670 674 156.2
D 12 227 1813455 12008.38 614 597 151.0
D 2 249 966588 6398.73 614 597 151.0
D 2 250 478893 3168.24 614 597 151.0

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