ASTROSAT CZTI

Data Quality Report

Orbit 20160116_G02_052T02_9000000276_level2

Creation date: 2025-10-25T22:01:22.672250
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/AS1G02_052T02_9000000276cztM0_level2.fits modeM0/AS1G02_052T02_9000000276cztM0_level2_quad_clean.evt
Size (bytes)962,818,560942,220,800
Size918.2 MB 898.6 MB
Events in quadrant A5,660,4325,464,469
Events in quadrant B5,543,1215,463,681
Events in quadrant C5,610,9485,283,653
Events in quadrant D4,794,5704,777,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04755960
B05210260
C04646520
D04689310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022760
B022710
C022760
D022740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1100037310.664527%
B10991523782.163490%
C1100656090.553309%
D10999425802.345582%

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 161575 111290 0 0 0.00% 0.00%
B 161575 111155 0 0 0.00% 0.00%
C 161575 111361 0 0 0.00% 0.00%
D 161575 111113 0 0 0.00% 0.00%

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 0 29 5220 11.25 1466 1363 342.8
A 7 110 5012 10.64 1466 1363 342.8
A 9 19 4109 8.01 1466 1363 342.8
B 2 9 4486 11.82 1461 1389 261.9
B 14 254 3615 8.5 1461 1389 261.9
B 5 128 3602 8.45 1461 1389 261.9
C 9 242 3746 6.66 1480 1370 356.8
C 12 241 3735 6.63 1480 1370 356.8
C 1 81 3471 5.89 1480 1370 356.8
D 1 19 3525 7.18 1371 1254 316.2
D 6 231 3405 6.8 1371 1254 316.2
D 11 82 3336 6.58 1371 1254 316.2

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