ASTROSAT CZTI

Data Quality Report

Orbit 29181

Creation date: 2024-06-27T20:01:11.866126
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_021T08_9000004186_29181cztM0_level2.evt modeM0/AS1A10_021T08_9000004186_29181cztM0_level2_quad_clean.evt
Size (bytes)538,588,80076,619,520
Size513.6 MB 73.1 MB
Events in quadrant A3,591,972475,732
Events in quadrant B3,789,042484,113
Events in quadrant C3,783,802466,101
Events in quadrant D4,722,153457,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148612
B0155202
C0155122
D0182662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62581001.597955%
B62581332.125280%
C62581692.700543%
D62582944.697987%

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 7588 6260 1 1 0.01% 0.02%
B 7588 6260 3 3 0.04% 0.05%
C 7588 6260 0 0 0.00% 0.00%
D 7588 6260 132 132 1.74% 2.11%

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 12014 60.87 931 916 182.3
A 3 137 8168 39.78 931 916 182.3
A 0 226 7933 38.49 931 916 182.3
B 0 183 170292 998.61 918 898 169.6
B 12 111 19998 112.6 918 898 169.6
B 11 111 18194 101.96 918 898 169.6
C 14 238 147539 711.12 900 911 206.2
C 3 233 116831 562.19 900 911 206.2
C 2 114 14949 68.08 900 911 206.2
D 1 52 612003 2897.43 895 876 210.9
D 8 195 429615 2032.71 895 876 210.9
D 2 120 117677 553.77 895 876 210.9

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