ASTROSAT CZTI

Data Quality Report

Orbit 11839

Creation date: 2024-06-27T16:18:59.146940
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/AS1A04_088T03_9000001750_11839cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11839cztM0_level2_quad_clean.evt
Size (bytes)474,163,20091,454,400
Size452.2 MB 87.2 MB
Events in quadrant A2,972,658601,232
Events in quadrant B4,225,815605,945
Events in quadrant C2,820,910588,737
Events in quadrant D3,932,148553,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127033
B0164332
C0124852
D0156012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6011180.299451%
B60114898.135086%
C6011250.415904%
D60111362.262519%

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 7377 6013 1 1 0.01% 0.02%
B 7377 6013 250 250 3.39% 4.16%
C 7377 6013 11 11 0.15% 0.18%
D 7377 6013 102 102 1.38% 1.70%

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 51667 346.27 734 720 147.1
A 1 178 25750 170.12 734 720 147.1
A 1 161 22848 150.39 734 720 147.1
B 4 239 597507 4445.6 719 703 134.2
B 3 64 548806 4082.82 719 703 134.2
B 15 204 156729 1162.24 719 703 134.2
C 0 10 38581 234.18 712 716 161.7
C 13 61 5380 28.85 712 716 161.7
C 12 4 3993 20.27 712 716 161.7
D 1 52 827516 4546.15 688 676 181.9
D 8 195 321149 1762.03 688 676 181.9
D 12 17 61343 333.56 688 676 181.9

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