ASTROSAT CZTI

Data Quality Report

Orbit 01302

Creation date: 2024-06-27T14:10:39.166846
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/AS1G04_002T02_9000000230_01302cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01302cztM0_level2_quad_clean.evt
Size (bytes)1,254,888,000100,831,680
Size1.2 GB 96.2 MB
Events in quadrant A8,291,356650,279
Events in quadrant B8,519,172698,121
Events in quadrant C7,674,452678,738
Events in quadrant D13,088,622570,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292893
B0299842
C0274392
D0436502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65243745.732679%
B6524510.781729%
C652440.061312%
D6524133920.524218%

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 7814 6525 560 560 7.17% 8.58%
B 7814 6525 423 423 5.41% 6.48%
C 7814 6525 172 172 2.20% 2.64%
D 7814 6524 2844 2844 36.40% 43.59%

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 4 32 1086317 2447.86 1862 1873 443.0
A 15 127 30028 63.55 1862 1873 443.0
A 0 253 14866 29.33 1862 1873 443.0
B 8 4 350661 729.79 2043 2052 477.7
B 12 52 204965 424.79 2043 2052 477.7
B 6 53 146766 302.95 2043 2052 477.7
C 15 241 327053 636.81 1851 1910 510.6
C 8 208 66418 126.34 1851 1910 510.6
C 3 111 20848 37.09 1851 1910 510.6
D 13 169 4508761 9318.53 1582 1634 483.7
D 12 22 1896368 3917.38 1582 1634 483.7
D 10 84 713022 1470.8 1582 1634 483.7

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