ASTROSAT CZTI

Data Quality Report

Orbit 46852

Creation date: 2024-06-27T23:28:30.320996
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/AS1A13_053T01_9000006274_46852cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46852cztM0_level2_quad_clean.evt
Size (bytes)458,953,920105,586,560
Size437.7 MB 100.7 MB
Events in quadrant A6,034,238707,482
Events in quadrant B3,380,961730,202
Events in quadrant C3,067,466697,391
Events in quadrant D4,034,630637,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220131
B0141061
C0134151
D0162141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60812393.930275%
B60811201.973360%
C6081550.904457%
D60811883.091597%

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 7306 6082 42 42 0.57% 0.69%
B 7306 6082 27 27 0.37% 0.44%
C 7306 6082 33 33 0.45% 0.54%
D 7306 6082 131 131 1.79% 2.15%

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 3242305 22295.47 703 690 145.4
A 7 3 25975 173.91 703 690 145.4
A 9 191 22382 149.2 703 690 145.4
B 3 112 406005 2973.72 702 682 136.3
B 12 3 79169 575.83 702 682 136.3
B 0 198 59654 432.66 702 682 136.3
C 14 254 308573 1927.83 684 687 159.7
C 1 241 79698 494.73 684 687 159.7
C 10 20 6422 35.91 684 687 159.7
D 1 52 744828 4420.49 681 660 168.3
D 13 249 275067 1630.03 681 660 168.3
D 12 233 145358 859.53 681 660 168.3

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