ASTROSAT CZTI

Data Quality Report

Orbit 39681

Creation date: 2024-06-27T22:07:40.822536
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_9000005490_39681cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39681cztM0_level2_quad_clean.evt
Size (bytes)601,277,76068,374,080
Size573.4 MB 65.2 MB
Events in quadrant A11,319,067121,864
Events in quadrant B2,977,440579,862
Events in quadrant C4,778,730513,152
Events in quadrant D2,791,787503,606

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371003
B0122452
C0176242
D0120202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5018408981.486648%
B50181372.730171%
C50184879.705062%
D50181372.730171%

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 6991 5019 3386 3386 48.43% 67.46%
B 6991 5019 95 95 1.36% 1.89%
C 6991 5019 432 432 6.18% 8.61%
D 6991 5019 111 111 1.59% 2.21%

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 15 222 9086310 126717.14 346 340 71.7
A 15 174 496693 6922.37 346 340 71.7
A 10 83 294267 4099.24 346 340 71.7
B 5 172 440107 4150.36 548 534 105.9
B 10 246 235645 2219.87 548 534 105.9
B 5 255 84075 788.78 548 534 105.9
C 9 187 1652267 13546.55 520 523 121.9
C 15 208 782075 6409.79 520 523 121.9
C 15 214 206303 1687.68 520 523 121.9
D 12 218 195602 1509.25 529 514 129.3
D 2 250 152426 1175.23 529 514 129.3
D 13 171 115462 889.27 529 514 129.3

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