ASTROSAT CZTI

Data Quality Report

Orbit 20170501_A03_036T01_9000001204_level2

Creation date: 2025-11-11T16:53:08.167773
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/AS1A03_036T01_9000001204cztM0_level2.fits modeM0/AS1A03_036T01_9000001204cztM0_level2_quad_clean.evt
Size (bytes)525,674,880565,473,600
Size501.3 MB 539.3 MB
Events in quadrant A3,120,3503,440,355
Events in quadrant B3,029,1903,448,017
Events in quadrant C3,114,7063,283,381
Events in quadrant D2,663,2202,962,716

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01206460
B01320090
C01188210
D01322150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581587921.361807%
B5816317082.936575%
C581744740.814797%
D5817715762.708974%

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 66044 58196 0 0 0.00% 0.00%
B 66044 58176 0 0 0.00% 0.00%
C 66044 58202 0 0 0.00% 0.00%
D 66044 58178 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 3154 11.58 812 760 206.8
A 7 110 2617 8.98 812 760 206.8
A 0 30 2489 8.36 812 760 206.8
B 2 9 2609 11.64 801 765 158.4
B 5 128 2076 8.28 801 765 158.4
B 12 226 2043 8.07 801 765 158.4
C 1 80 2411 7.64 823 763 215.6
C 1 81 2371 7.46 823 763 215.6
C 12 241 2244 6.87 823 763 215.6
D 3 14 1987 6.33 758 688 205.1
D 7 5 1946 6.13 758 688 205.1
D 7 3 1922 6.02 758 688 205.1

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