ASTROSAT CZTI

Data Quality Report

Orbit 38781

Creation date: 2024-06-27T21:56:19.679586
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_051T01_9000005394_38781cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38781cztM0_level2_quad_clean.evt
Size (bytes)299,675,52093,012,480
Size285.8 MB 88.7 MB
Events in quadrant A2,683,210626,704
Events in quadrant B2,653,331655,639
Events in quadrant C2,645,064618,593
Events in quadrant D2,716,620561,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108883
B0110122
C0105472
D0113952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506480.157978%
B5064460.908373%
C5064100.197472%
D5064621.224329%

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 7217 5065 5 5 0.07% 0.10%
B 7217 5065 15 15 0.21% 0.30%
C 7217 5065 9 9 0.12% 0.18%
D 7217 5065 61 61 0.85% 1.20%

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 385433 3247.39 591 580 118.5
A 13 254 7286 56.59 591 580 118.5
A 3 137 6133 46.86 591 580 118.5
B 4 171 152540 1326.27 595 579 114.6
B 5 200 115395 1002.08 595 579 114.6
B 12 111 14351 120.2 595 579 114.6
C 15 214 225555 1631.11 593 598 137.9
C 0 239 35073 249.97 593 598 137.9
C 15 208 32807 233.54 593 598 137.9
D 10 118 259366 1828.64 580 564 141.5
D 5 222 66837 468.27 580 564 141.5
D 2 249 59359 415.43 580 564 141.5

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