ASTROSAT CZTI

Data Quality Report

Orbit 26174

Creation date: 2024-06-27T19:25:40.728212
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_138T04_9000003776_26174cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26174cztM0_level2_quad_clean.evt
Size (bytes)513,912,96091,681,920
Size490.1 MB 87.4 MB
Events in quadrant A3,216,471584,362
Events in quadrant B3,398,220598,880
Events in quadrant C3,348,563574,120
Events in quadrant D5,143,275549,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137830
B0141900
C0140840
D0197460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67441442.135231%
B67451552.297999%
C67451732.564863%
D67455387.976279%

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 7158 6745 0 0 0.00% 0.00%
B 7160 6747 0 0 0.00% 0.00%
C 7160 6747 0 0 0.00% 0.00%
D 7160 6747 404 404 5.64% 5.99%

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 10181 56.01 831 812 167.3
A 3 137 7636 40.79 831 812 167.3
A 0 226 7115 37.68 831 812 167.3
B 0 230 167866 1054.95 823 802 158.4
B 12 111 19530 118.26 823 802 158.4
B 11 111 17684 106.6 823 802 158.4
C 14 238 128668 675.95 801 806 189.2
C 3 233 68672 358.78 801 806 189.2
C 2 16 34177 176.42 801 806 189.2
D 1 52 2096356 11118.67 793 776 188.5
D 2 234 31960 165.46 793 776 188.5
D 12 233 24418 125.44 793 776 188.5

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