ASTROSAT CZTI

Data Quality Report

Orbit 31319

Creation date: 2024-06-27T20:26:39.701723
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_053T30_9000004536_31319cztM0_level2.evt modeM0/AS1A10_053T30_9000004536_31319cztM0_level2_quad_clean.evt
Size (bytes)783,040,320103,688,640
Size746.8 MB 98.9 MB
Events in quadrant A4,317,435644,336
Events in quadrant B8,772,121634,774
Events in quadrant C4,864,316627,173
Events in quadrant D5,161,988618,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182472
B0321984
C0199812
D0210862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8859360.406366%
B885988810.023705%
C88591972.223727%
D8859580.654701%

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 10729 8861 5 5 0.05% 0.06%
B 10729 8861 358 358 3.34% 4.04%
C 10729 8861 5 5 0.05% 0.06%
D 10729 8861 14 14 0.13% 0.16%

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 15260 63.53 1115 1088 223.1
A 8 192 14599 60.57 1115 1088 223.1
A 3 137 11554 46.92 1115 1088 223.1
B 6 159 2344380 11348.15 1064 1036 206.5
B 4 80 1896448 9178.94 1064 1036 206.5
B 0 230 192329 926.38 1064 1036 206.5
C 3 233 394582 1566.88 1069 1076 251.1
C 14 238 187477 742.22 1069 1076 251.1
C 0 10 47639 185.41 1069 1076 251.1
D 8 195 770436 2944.81 1083 1053 261.3
D 12 79 163692 622.5 1083 1053 261.3
D 2 250 67101 252.8 1083 1053 261.3

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