ASTROSAT CZTI

Data Quality Report

Orbit 15780

Creation date: 2024-06-27T17:13:19.579037
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/AS1A04_100T01_9000002336_15780cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15780cztM0_level2_quad_clean.evt
Size (bytes)409,841,28085,821,120
Size390.9 MB 81.8 MB
Events in quadrant A2,930,842533,956
Events in quadrant B3,138,378547,223
Events in quadrant C2,968,879537,469
Events in quadrant D2,933,291528,544

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132682
B0137171
C0132921
D0134721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479470.725421%
B6479651.003241%
C6479711.095848%
D6479300.463034%

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 7060 6481 0 0 0.00% 0.00%
B 7060 6481 1 1 0.01% 0.02%
C 7060 6481 0 0 0.00% 0.00%
D 7060 6481 11 11 0.16% 0.17%

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 0 226 6742 39.12 758 742 153.4
A 12 194 5652 32.01 758 742 153.4
A 15 69 5221 29.2 758 742 153.4
B 4 216 63188 424.7 760 741 147.0
B 3 209 40551 270.75 760 741 147.0
B 4 173 23302 153.44 760 741 147.0
C 14 238 112255 651.42 727 733 171.2
C 10 22 6008 30.81 727 733 171.2
C 13 61 5230 26.27 727 733 171.2
D 2 14 51696 260.62 732 717 195.6
D 1 52 45535 229.12 732 717 195.6
D 2 234 26387 131.23 732 717 195.6

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