ASTROSAT CZTI

Data Quality Report

Orbit 25083

Creation date: 2024-06-27T19:13:38.373989
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/AS1T03_206T01_9000003672_25083cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25083cztM0_level2_quad_clean.evt
Size (bytes)501,367,68094,619,520
Size478.1 MB 90.2 MB
Events in quadrant A3,148,664627,511
Events in quadrant B3,546,160642,167
Events in quadrant C3,216,504599,613
Events in quadrant D4,849,567560,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012864
B012864
C012864
D012864

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132560
B0145900
C0133880
D0187010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6236360.577293%
B6236881.411161%
C6236741.186658%
D62351983.175621%

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 7486 6237 0 0 0.00% 0.00%
B 7486 6237 29 29 0.39% 0.46%
C 7486 6237 0 0 0.00% 0.00%
D 7485 6236 130 130 1.74% 2.08%

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 11818 67.9 815 800 162.3
A 0 226 7144 39.1 815 800 162.3
A 3 137 6724 36.51 815 800 162.3
B 0 229 147380 956.92 817 799 153.2
B 5 172 78907 509.91 817 799 153.2
B 0 190 66456 428.63 817 799 153.2
C 14 238 124414 675.34 782 786 183.1
C 7 247 28022 148.78 782 786 183.1
C 1 16 11282 57.34 782 786 183.1
D 9 35 1080261 5704.85 776 753 189.2
D 1 52 283055 1491.88 776 753 189.2
D 12 233 216770 1141.58 776 753 189.2

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