ASTROSAT CZTI

Data Quality Report

Orbit 48173

Creation date: 2024-08-26T09:09:31.902529
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/AS1C09_004T05_9000006408_48173cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48173cztM0_level2_quad_clean.evt
Size (bytes)620,040,96077,685,120
Size591.3 MB 74.1 MB
Events in quadrant A6,891,928686,966
Events in quadrant B1,148,18643,868
Events in quadrant C2,960,395678,766
Events in quadrant D11,454,627496,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247351
B070091
C0135921
D0384005

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63302754.344392%
B63316331100.000000%
C63311021.611120%
D6330303847.993681%

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 7280 6332 74 74 1.02% 1.17%
B 7280 6330 0 0 0.00% 0.00%
C 7281 6333 40 40 0.55% 0.63%
D 7280 6331 2493 2493 34.24% 39.38%

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 4214601 30168.54 676 660 139.7
A 13 254 13852 94.44 676 660 139.7
A 13 6 10795 72.56 676 660 139.7
B 2 177 870720 79319.74 45 44 11.0
B 4 21 40229 3660.91 45 44 11.0
B 0 200 32743 2978.92 45 44 11.0
C 12 2 246717 1527.77 682 683 161.0
C 0 207 31970 194.28 682 683 161.0
C 12 249 12305 72.17 682 683 161.0
D 12 2 8642643 62379.01 542 523 138.5
D 14 34 274799 1979.73 542 523 138.5
D 12 1 143454 1031.68 542 523 138.5

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