ASTROSAT CZTI

Data Quality Report

Orbit 39880

Creation date: 2024-06-27T22:09:49.629122
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_032T03_9000005502_39880cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39880cztM0_level2_quad_clean.evt
Size (bytes)316,854,72089,303,040
Size302.2 MB 85.2 MB
Events in quadrant A3,151,717594,125
Events in quadrant B2,582,108620,396
Events in quadrant C2,810,114601,547
Events in quadrant D2,802,503544,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124311
B0107100
C0112800
D0115740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49101032.097760%
B4910170.346232%
C4910450.916497%
D49101042.118126%

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 6913 4911 59 59 0.85% 1.20%
B 6913 4911 3 3 0.04% 0.06%
C 6913 4911 39 39 0.56% 0.79%
D 6913 4911 92 92 1.33% 1.87%

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 397282 3458.0 568 557 114.7
A 14 250 223200 1940.63 568 557 114.7
A 9 143 218104 1896.22 568 557 114.7
B 0 230 117283 1079.02 569 554 108.2
B 4 170 63245 579.51 569 554 108.2
B 0 183 50828 464.72 569 554 108.2
C 14 254 320466 2393.23 569 574 133.7
C 15 214 207117 1545.22 569 574 133.7
C 1 16 35580 261.89 569 574 133.7
D 12 233 329381 2376.74 567 552 138.4
D 12 227 67099 480.99 567 552 138.4
D 13 171 51010 364.7 567 552 138.4

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