ASTROSAT CZTI

Data Quality Report

Orbit 50191

Creation date: 2025-01-10T18:26:06.085300
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/AS1C09_003T01_9000006442_50191cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50191cztM0_level2_quad_clean.evt
Size (bytes)1,109,646,72063,673,920
Size1.0 GB 60.7 MB
Events in quadrant A8,039,892473,071
Events in quadrant B6,682,366562,332
Events in quadrant C14,789,60733,702
Events in quadrant D11,053,972397,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283781
B0244881
C0483851
D0374441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609173926.312604%
B6609125719.019519%
C6609628995.158118%
D6609220333.333333%

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 7244 6610 1430 1430 19.74% 21.63%
B 7244 6610 863 863 11.91% 13.06%
C 7243 6608 4884 4884 67.43% 73.91%
D 7244 6610 2280 2280 31.47% 34.49%

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 98 3006427 19094.53 625 609 157.4
A 4 4 756259 4800.28 625 609 157.4
A 8 8 583032 3699.86 625 609 157.4
B 4 206 2825241 21227.73 627 604 133.1
B 12 3 536701 4028.88 627 604 133.1
B 6 255 234853 1760.43 627 604 133.1
C 4 111 10057682 195759.18 166 163 51.4
C 15 213 2791828 54336.86 166 163 51.4
C 15 197 575208 11192.65 166 163 51.4
D 15 106 1733594 10238.7 598 577 169.3
D 15 108 1558751 9205.72 598 577 169.3
D 8 192 737164 4351.77 598 577 169.3

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