ASTROSAT CZTI

Data Quality Report

Orbit 38895

Creation date: 2024-06-27T21:57:51.671846
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/AS1T05_064T01_9000005416_38895cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38895cztM0_level2_quad_clean.evt
Size (bytes)356,489,28091,684,800
Size340.0 MB 87.4 MB
Events in quadrant A2,794,577628,997
Events in quadrant B2,733,212642,737
Events in quadrant C2,554,323622,730
Events in quadrant D4,723,090529,680

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114383
B0113772
C0106252
D0174612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5021170.338578%
B5021480.955985%
C5021100.199164%
D502151810.316670%

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 6994 5022 10 10 0.14% 0.20%
B 6994 5022 37 37 0.53% 0.74%
C 6994 5022 4 4 0.06% 0.08%
D 6994 5022 504 504 7.21% 10.04%

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 423611 3614.32 582 570 117.0
A 13 248 81919 695.02 582 570 117.0
A 15 174 14291 117.23 582 570 117.0
B 5 184 322832 2953.39 581 567 109.1
B 5 172 28882 259.49 581 567 109.1
B 0 155 20731 184.79 581 567 109.1
C 15 214 208862 1564.72 578 583 133.1
C 14 254 36617 270.71 578 583 133.1
C 0 10 26855 197.37 578 583 133.1
D 12 227 1284274 9651.06 555 539 133.0
D 14 52 245261 1839.81 555 539 133.0
D 2 250 231316 1734.97 555 539 133.0

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