ASTROSAT CZTI

Data Quality Report

Orbit 42748

Creation date: 2024-06-27T22:43:46.496728
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/AS1A05_013T01_9000005822_42748cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42748cztM0_level2_quad_clean.evt
Size (bytes)325,802,88091,895,040
Size310.7 MB 87.6 MB
Events in quadrant A3,055,542628,411
Events in quadrant B2,444,364634,478
Events in quadrant C3,690,460594,521
Events in quadrant D2,468,596564,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121312
B0106092
C0142362
D0109422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5149310.602059%
B5149160.310740%
C51491833.554088%
D5149380.738007%

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 7092 5150 18 18 0.25% 0.35%
B 7092 5150 6 6 0.08% 0.12%
C 7091 5149 155 155 2.19% 3.01%
D 7092 5150 34 34 0.48% 0.66%

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 552309 4575.64 596 585 120.6
A 13 248 91894 757.26 596 585 120.6
A 15 237 44504 364.24 596 585 120.6
B 5 172 52873 462.57 590 575 113.1
B 0 245 28292 245.15 590 575 113.1
B 5 255 21278 183.11 590 575 113.1
C 0 239 874220 6580.99 569 573 132.8
C 4 254 338027 2541.97 569 573 132.8
C 15 214 210887 1584.25 569 573 132.8
D 7 96 84100 590.77 576 560 141.4
D 12 233 59306 415.43 576 560 141.4
D 5 70 29317 203.36 576 560 141.4

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