ASTROSAT CZTI

Data Quality Report

Orbit 30990

Creation date: 2024-06-27T20:22:00.253616
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/AS1A10_071T48_9000004478_30990cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30990cztM0_level2_quad_clean.evt
Size (bytes)556,171,20095,495,040
Size530.4 MB 91.1 MB
Events in quadrant A3,186,864642,261
Events in quadrant B5,465,905639,927
Events in quadrant C3,703,632601,441
Events in quadrant D4,075,429583,080

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132212
B0202152
C0147912
D0161442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6088330.542050%
B60882574.221419%
C60882103.449409%
D6088540.886991%

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 7438 6088 0 0 0.00% 0.00%
B 7438 6088 114 114 1.53% 1.87%
C 7438 6089 109 109 1.47% 1.79%
D 7438 6089 60 60 0.81% 0.99%

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 13 254 11282 63.69 825 812 164.4
A 3 137 7668 41.7 825 812 164.4
A 0 226 7127 38.41 825 812 164.4
B 6 159 1787330 11895.23 817 799 150.2
B 5 172 336752 2236.87 817 799 150.2
B 0 190 37738 245.95 817 799 150.2
C 0 10 438483 2406.07 779 787 181.9
C 14 238 130411 712.56 779 787 181.9
C 14 67 41713 224.98 779 787 181.9
D 12 218 329472 1788.87 784 766 183.8
D 13 174 274612 1490.32 784 766 183.8
D 8 195 247787 1344.33 784 766 183.8

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