ASTROSAT CZTI

Data Quality Report

Orbit 20230914_A09_006T09_9000005842_level2

Creation date: 2023-09-15T16:04:58.550240
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/AS1A09_006T09_9000005842cztM0_level2.fits modeM0/AS1A09_006T09_9000005842cztM0_level2_quad_clean.evt
Size (bytes)239,034,240248,146,560
Size228.0 MB 236.7 MB
Events in quadrant A1,409,5581,439,633
Events in quadrant B1,356,4421,450,425
Events in quadrant C1,412,1901,506,663
Events in quadrant D1,164,9181,223,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05600
B05600
C05600
D05600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0627540
B0611030
C0560990
D0903850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A275613011.092123%
B275615401.959290%
C27561270.097965%
D2756124939.045390%

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 34510 27550 0 0 0.00% 0.00%
B 34510 27556 0 0 0.00% 0.00%
C 34510 27561 0 0 0.00% 0.00%
D 34510 27486 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 0 29 1183 8.91 368 345 94.1
A 7 110 1132 8.37 368 345 94.1
A 9 19 1124 8.28 368 345 94.1
B 2 9 1219 12.13 358 342 72.3
B 2 8 972 8.72 358 342 72.3
B 3 80 961 8.57 358 342 72.3
C 1 81 1179 8.47 373 348 98.1
C 3 202 1169 8.37 373 348 98.1
C 3 203 1168 8.36 373 348 98.1
D 10 189 878 6.4 332 302 89.9
D 3 14 874 6.36 332 302 89.9
D 7 3 851 6.1 332 302 89.9

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