ASTROSAT CZTI

Data Quality Report

Orbit 39872

Creation date: 2024-06-27T22:09:42.847434
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_032T02_9000005500_39872cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39872cztM0_level2_quad_clean.evt
Size (bytes)397,713,60096,408,000
Size379.3 MB 91.9 MB
Events in quadrant A3,457,919643,650
Events in quadrant B3,681,933651,080
Events in quadrant C3,004,339638,812
Events in quadrant D4,117,058571,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138683
B0149852
C0126272
D0163032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5928811.366397%
B59281192.007422%
C5928300.506073%
D59282624.419703%

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 8644 5930 62 62 0.72% 1.05%
B 8644 5930 55 55 0.64% 0.93%
C 8644 5930 26 26 0.30% 0.44%
D 8644 5930 222 222 2.57% 3.74%

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 573100 4298.11 645 629 133.2
A 14 235 159849 1195.42 645 629 133.2
A 9 191 94451 704.42 645 629 133.2
B 0 183 263098 2095.24 643 626 125.3
B 0 190 215471 1715.05 643 626 125.3
B 0 245 167093 1328.86 643 626 125.3
C 15 214 250950 1681.98 632 635 148.8
C 9 187 103921 694.03 632 635 148.8
C 14 254 74784 498.24 632 635 148.8
D 2 250 395312 2579.17 620 602 153.0
D 12 227 251570 1639.91 620 602 153.0
D 13 171 231340 1507.72 620 602 153.0

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