ASTROSAT CZTI

Data Quality Report

Orbit 45040

Creation date: 2024-06-27T23:09:16.934675
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_020T01_9000006040_45040cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45040cztM0_level2_quad_clean.evt
Size (bytes)650,842,560111,749,760
Size620.7 MB 106.6 MB
Events in quadrant A5,680,282779,926
Events in quadrant B3,916,399793,323
Events in quadrant C3,594,557778,369
Events in quadrant D10,386,968568,688

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210631
B0158151
C0149511
D0354701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66412143.222406%
B66413074.622798%
C66411552.333986%
D6641183727.661497%

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 7781 6642 6 6 0.08% 0.09%
B 7781 6642 113 113 1.45% 1.70%
C 7781 6642 63 63 0.81% 0.95%
D 7781 6642 1546 1546 19.87% 23.28%

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 2498176 14946.98 804 786 167.1
A 13 248 35298 206.56 804 786 167.1
A 0 243 22298 128.75 804 786 167.1
B 0 189 383495 2498.44 793 771 153.2
B 5 255 125230 812.48 793 771 153.2
B 5 32 105106 681.1 793 771 153.2
C 14 254 411480 2218.47 792 797 185.1
C 12 2 65308 348.48 792 797 185.1
C 3 233 16374 84.15 792 797 185.1
D 13 174 3220472 17625.63 730 709 182.7
D 13 249 1373293 7513.8 730 709 182.7
D 11 241 882712 4828.26 730 709 182.7

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