ASTROSAT CZTI

Data Quality Report

Orbit 13521

Creation date: 2024-06-27T16:42:01.996090
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/AS1T02_020T01_9000001990_13521cztM0_level2.evt modeM0/AS1T02_020T01_9000001990_13521cztM0_level2_quad_clean.evt
Size (bytes)508,728,96076,224,960
Size485.2 MB 72.7 MB
Events in quadrant A3,345,015466,737
Events in quadrant B3,776,831499,140
Events in quadrant C3,614,238451,456
Events in quadrant D4,211,275418,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141683
B0154152
C0148072
D0169422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67751091.608856%
B67751732.553506%
C6775801.180812%
D67762433.586187%

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 7716 6776 0 0 0.00% 0.00%
B 7716 6776 35 35 0.45% 0.52%
C 7716 6776 8 8 0.10% 0.12%
D 7717 6777 187 187 2.42% 2.76%

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 1 162 22013 120.71 859 840 175.4
A 0 226 7742 39.35 859 840 175.4
A 1 178 7645 38.8 859 840 175.4
B 3 64 246900 1494.96 859 839 164.6
B 0 189 76942 462.37 859 839 164.6
B 4 142 66287 397.63 859 839 164.6
C 3 233 397047 2082.8 825 828 190.2
C 13 61 5871 26.51 825 828 190.2
C 0 207 2523 8.91 825 828 190.2
D 13 104 796474 4093.27 816 793 194.4
D 8 195 230069 1179.48 816 793 194.4
D 12 110 60954 309.49 816 793 194.4

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