ASTROSAT CZTI

Data Quality Report

Orbit 35716

Creation date: 2022-05-13T09:57:25.080527
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/AS1A09_142T05_9000005118_35716cztM0_level2.evt modeM0/AS1A09_142T05_9000005118_35716cztM0_level2_quad_clean.evt
Size (bytes)472,550,40066,044,160
Size450.7 MB 63.0 MB
Events in quadrant A2,751,338405,537
Events in quadrant B4,225,812400,209
Events in quadrant C4,094,097393,440
Events in quadrant D2,841,437390,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119723
B0164052
C0159502
D0127042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A586640.068190%
B58665018.540743%
C58662494.244801%
D5866290.494374%

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 7150 5867 0 0 0.00% 0.00%
B 7150 5867 408 408 5.71% 6.95%
C 7150 5867 220 220 3.08% 3.75%
D 7150 5867 18 18 0.25% 0.31%

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 148287 1077.94 669 655 137.0
A 13 6 9571 65.1 669 655 137.0
A 3 137 7283 48.39 669 655 137.0
B 5 172 1478666 11795.11 646 630 125.3
B 5 255 146048 1160.47 646 630 125.3
B 0 189 24188 188.0 646 630 125.3
C 0 10 668138 4450.0 643 647 150.0
C 0 207 558749 3720.73 643 647 150.0
C 15 214 244829 1627.9 643 647 150.0
D 2 250 124628 774.12 651 633 160.2
D 13 249 116812 725.33 651 633 160.2
D 10 118 31766 194.37 651 633 160.2

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