ASTROSAT CZTI

Data Quality Report

Orbit 51042

Creation date: 2025-03-06T08:46:54.712529
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/AS1C07_001T02_9000006452_51042cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51042cztM0_level2_quad_clean.evt
Size (bytes)726,468,48086,040,000
Size692.8 MB 82.1 MB
Events in quadrant A7,451,337545,769
Events in quadrant B5,291,249604,952
Events in quadrant C6,259,397536,026
Events in quadrant D7,390,802467,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266921
B0201881
C0231851
D0265452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646272411.203962%
B64625348.263695%
C64636239.639486%
D6462105716.357165%

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 7467 6462 608 608 8.14% 9.41%
B 7466 6461 386 386 5.17% 5.97%
C 7468 6464 584 584 7.82% 9.03%
D 7467 6462 1074 1074 14.38% 16.62%

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 12 3 1676338 10493.28 632 617 159.7
A 10 253 1334718 8354.07 632 617 159.7
A 2 143 363931 2275.05 632 617 159.7
B 12 32 1217782 9080.35 632 611 134.0
B 5 185 274862 2045.97 632 611 134.0
B 4 171 228816 1702.46 632 611 134.0
C 4 12 1262904 7340.93 616 609 172.0
C 13 3 553078 3212.91 616 609 172.0
C 4 5 474869 2758.08 616 609 172.0
D 8 176 2386817 14012.41 586 565 170.3
D 15 93 1561191 9164.21 586 565 170.3
D 3 12 214479 1256.13 586 565 170.3

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