ASTROSAT CZTI

Data Quality Report

Orbit 31232

Creation date: 2024-06-27T20:25:22.128629
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/AS1C06_002T02_9000004518_31232cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31232cztM0_level2_quad_clean.evt
Size (bytes)580,671,36089,565,120
Size553.8 MB 85.4 MB
Events in quadrant A3,095,876582,745
Events in quadrant B5,219,900573,051
Events in quadrant C3,814,754553,304
Events in quadrant D5,005,981540,323

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134292
B0202892
C0155122
D0194162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6634280.422068%
B6634971.462165%
C66351822.743029%
D66351291.944235%

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 7614 6635 0 0 0.00% 0.00%
B 7614 6635 11 11 0.14% 0.17%
C 7615 6636 53 53 0.70% 0.80%
D 7615 6636 71 71 0.93% 1.07%

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 13537 78.9 801 785 161.6
A 3 137 8112 45.33 801 785 161.6
A 0 226 6702 36.61 801 785 161.6
B 6 159 1871037 12405.02 789 769 150.8
B 4 171 90141 592.78 789 769 150.8
B 4 80 69988 459.11 789 769 150.8
C 0 10 274724 1543.89 758 762 177.4
C 3 233 245290 1378.01 758 762 177.4
C 10 22 187937 1054.81 758 762 177.4
D 8 195 1735104 8695.37 757 742 199.5
D 13 249 232484 1161.86 757 742 199.5
D 12 79 88503 440.0 757 742 199.5

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