ASTROSAT CZTI

Data Quality Report

Orbit 40557

Creation date: 2024-06-27T22:17:33.301455
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_054T02_9000005550_40557cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40557cztM0_level2_quad_clean.evt
Size (bytes)353,275,20085,553,280
Size336.9 MB 81.6 MB
Events in quadrant A2,902,658587,886
Events in quadrant B2,965,336599,530
Events in quadrant C2,602,566578,685
Events in quadrant D4,178,678440,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118813
B0124122
C0113432
D0162412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5481100.182448%
B5481520.948732%
C5481190.346652%
D5481113820.762635%

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 7153 5482 3 3 0.04% 0.05%
B 7153 5482 38 38 0.53% 0.69%
C 7153 5482 15 15 0.21% 0.27%
D 7153 5481 202 202 2.82% 3.69%

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 489176 4043.43 587 574 120.8
A 6 10 120468 992.18 587 574 120.8
A 2 79 8756 67.71 587 574 120.8
B 3 112 480287 4209.3 584 568 114.0
B 4 171 65573 570.39 584 568 114.0
B 0 230 45258 392.13 584 568 114.0
C 15 214 240576 1772.71 574 576 135.4
C 14 254 65506 479.59 574 576 135.4
C 9 187 26990 195.1 574 576 135.4
D 12 227 1099658 8447.07 521 506 130.1
D 12 6 260218 1995.91 521 506 130.1
D 2 250 250817 1923.66 521 506 130.1

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