ASTROSAT CZTI

Data Quality Report

Orbit 39608

Creation date: 2024-06-27T22:06:44.796931
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_018T01_9000005488_39608cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39608cztM0_level2_quad_clean.evt
Size (bytes)352,431,36084,945,600
Size336.1 MB 81.0 MB
Events in quadrant A2,572,704575,156
Events in quadrant B2,490,403587,540
Events in quadrant C4,757,422538,196
Events in quadrant D2,840,092523,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108003
B0109322
C0176902
D0119472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4949150.303092%
B4949711.434633%
C49494308.688624%
D4949801.616488%

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 7011 4950 9 9 0.13% 0.18%
B 7011 4950 42 42 0.60% 0.85%
C 7011 4950 400 400 5.71% 8.08%
D 7011 4950 71 71 1.01% 1.43%

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 411659 3796.67 535 525 108.3
A 0 8 45319 413.66 535 525 108.3
A 13 248 21390 192.68 535 525 108.3
B 5 255 318625 3098.1 534 519 102.7
B 5 172 76423 739.24 534 519 102.7
B 12 111 12562 117.29 534 519 102.7
C 9 187 1887922 15745.15 516 519 119.9
C 15 208 603464 5029.9 516 519 119.9
C 15 214 216396 1800.9 516 519 119.9
D 2 249 225522 1766.59 523 508 127.4
D 12 227 165657 1296.59 523 508 127.4
D 13 249 124446 973.04 523 508 127.4

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