ASTROSAT CZTI

Data Quality Report

Orbit 39764

Creation date: 2024-06-27T22:08:43.214943
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_022T01_9000005494_39764cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39764cztM0_level2_quad_clean.evt
Size (bytes)312,523,20093,211,200
Size298.0 MB 88.9 MB
Events in quadrant A3,012,242644,524
Events in quadrant B2,676,243650,513
Events in quadrant C2,748,262606,018
Events in quadrant D2,737,903566,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120213
B0109962
C0112302
D0112852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5059290.573236%
B5059380.751137%
C505950.098834%
D5059410.810437%

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 7062 5060 13 13 0.18% 0.26%
B 7062 5060 23 23 0.33% 0.45%
C 7062 5060 3 3 0.04% 0.06%
D 7062 5060 39 39 0.55% 0.77%

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 455591 3737.54 605 595 121.7
A 13 248 155656 1273.74 605 595 121.7
A 0 8 35850 289.6 605 595 121.7
B 5 255 172065 1512.1 592 578 113.4
B 5 172 102310 897.03 592 578 113.4
B 0 230 43514 378.59 592 578 113.4
C 15 208 252373 1872.14 579 582 134.5
C 15 214 212913 1578.74 579 582 134.5
C 0 10 9657 67.48 579 582 134.5
D 12 227 141784 983.7 586 567 143.6
D 13 249 104388 723.21 586 567 143.6
D 7 38 65329 451.12 586 567 143.6

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