ASTROSAT CZTI

Data Quality Report

Orbit 17021

Creation date: 2024-06-27T17:30:53.689898
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/AS1A05_206T01_9000002528_17021cztM0_level2.evt modeM0/AS1A05_206T01_9000002528_17021cztM0_level2_quad_clean.evt
Size (bytes)506,926,080119,646,720
Size483.4 MB 114.1 MB
Events in quadrant A4,222,389772,155
Events in quadrant B3,465,435828,636
Events in quadrant C3,352,072805,496
Events in quadrant D3,877,569770,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167642
B0144182
C0137402
D0155752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64073154.916498%
B6407630.983300%
C6407510.796004%
D64071472.294366%

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 7783 6409 258 258 3.31% 4.03%
B 7783 6409 10 10 0.13% 0.16%
C 7783 6409 4 4 0.05% 0.06%
D 7783 6409 124 124 1.59% 1.93%

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 15 174 1120533 7041.88 796 780 159.0
A 12 189 38818 239.21 796 780 159.0
A 0 226 7109 39.8 796 780 159.0
B 7 220 139162 918.64 823 802 150.6
B 4 216 51466 336.38 823 802 150.6
B 0 219 45866 299.2 823 802 150.6
C 14 238 127152 677.76 810 816 186.4
C 3 233 42691 224.65 810 816 186.4
C 0 207 20856 107.51 810 816 186.4
D 1 52 532405 2766.77 798 775 192.1
D 15 0 299721 1555.81 798 775 192.1
D 2 234 26345 133.07 798 775 192.1

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