ASTROSAT CZTI

Data Quality Report

Orbit 20231125_A13_012T02_9000005950_level2

Creation date: 2023-11-29T12:38:57.216000
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_012T02_9000005950cztM0_level2.fits modeM0/AS1A13_012T02_9000005950cztM0_level2_quad_clean.evt
Size (bytes)1,258,260,4801,270,094,400
Size1.2 GB 1.2 GB
Events in quadrant A7,018,4186,982,510
Events in quadrant B7,382,3727,808,306
Events in quadrant C7,668,3127,552,214
Events in quadrant D6,300,9786,400,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01730
B01730
C01730
D01730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028780
B028740
C028760
D028750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04972680
B03174330
C03065810
D04238430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1418881946313.717157%
B14188435212.481605%
C14188716151.138230%
D141859105787.456700%

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 161167 141693 0 0 0.00% 0.00%
B 161168 141867 0 0 0.00% 0.00%
C 161168 141900 0 0 0.00% 0.00%
D 161168 141683 0 0 0.00% 0.00%

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 7 110 5845 8.92 1834 1712 463.4
A 0 29 5565 8.32 1834 1712 463.4
A 15 236 5525 8.23 1834 1712 463.4
B 2 9 6725 12.46 1950 1847 391.4
B 2 8 5384 9.04 1950 1847 391.4
B 3 17 5362 8.98 1950 1847 391.4
C 3 202 6056 8.01 2028 1882 521.3
C 1 81 5725 7.37 2028 1882 521.3
C 3 203 5674 7.27 2028 1882 521.3
D 10 189 4693 6.02 1816 1650 505.2
D 6 79 4592 5.82 1816 1650 505.2
D 7 3 4515 5.67 1816 1650 505.2

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