ASTROSAT CZTI

Data Quality Report

Orbit 46512

Creation date: 2024-06-27T23:24:03.975264
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_068T07_9000006222_46512cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46512cztM0_level2_quad_clean.evt
Size (bytes)1,381,881,600293,048,640
Size1.3 GB 279.5 MB
Events in quadrant A17,803,0841,918,322
Events in quadrant B10,958,0281,981,484
Events in quadrant C9,035,5051,935,416
Events in quadrant D11,902,8001,739,077

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0657475
B0454525
C0406345
D0487535

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188224952.629901%
B188225572.959303%
C188232131.131594%
D188226243.315269%

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 20247 18827 94 94 0.46% 0.50%
B 20247 18826 326 326 1.61% 1.73%
C 20248 18828 144 144 0.71% 0.76%
D 20247 18827 457 457 2.26% 2.43%

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 9251617 21571.56 2058 2011 428.8
A 0 247 139524 320.7 2058 2011 428.8
A 9 191 129238 296.71 2058 2011 428.8
B 5 255 464789 1140.43 2054 1986 405.8
B 0 190 396713 972.68 2054 1986 405.8
B 8 234 348424 853.69 2054 1986 405.8
C 14 254 686489 1437.62 2034 2042 476.1
C 9 54 157224 325.95 2034 2042 476.1
C 12 2 122896 253.84 2034 2042 476.1
D 13 249 921283 1836.63 2012 1951 500.6
D 8 176 505635 1006.25 2012 1951 500.6
D 11 224 426140 847.44 2012 1951 500.6

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