ASTROSAT CZTI

Data Quality Report

Orbit 39422

Creation date: 2024-06-27T22:04:23.393722
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_077T06_9000005474_39422cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39422cztM0_level2_quad_clean.evt
Size (bytes)679,567,68078,462,720
Size648.1 MB 74.8 MB
Events in quadrant A5,078,510607,348
Events in quadrant B3,161,379627,021
Events in quadrant C3,914,362577,947
Events in quadrant D12,563,106168,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189413
B0132242
C0152262
D0411942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56432704.784689%
B56431773.136629%
C56433075.440369%
D5643426675.598086%

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 7045 5644 194 194 2.75% 3.44%
B 7045 5644 113 113 1.60% 2.00%
C 7045 5644 266 266 3.78% 4.71%
D 7045 5644 3442 3442 48.86% 60.99%

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 15 222 2160605 17119.91 619 606 126.2
A 10 83 470329 3722.97 619 606 126.2
A 2 79 42950 335.61 619 606 126.2
B 5 172 404733 3356.13 618 601 120.4
B 5 255 165944 1373.1 618 601 120.4
B 4 170 143766 1188.92 618 601 120.4
C 15 208 1013548 7278.4 596 600 139.2
C 15 214 236680 1696.32 596 600 139.2
C 9 187 235798 1689.98 596 600 139.2
D 12 235 8588143 94296.39 362 351 91.1
D 12 0 1755585 19272.97 362 351 91.1
D 13 249 340672 3736.82 362 351 91.1

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