ASTROSAT CZTI

Data Quality Report

Orbit 17947

Creation date: 2024-06-27T17:42:57.819354
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/AS1T03_025T01_9000002670_17947cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17947cztM0_level2_quad_clean.evt
Size (bytes)486,233,280115,971,840
Size463.7 MB 110.6 MB
Events in quadrant A4,364,192758,661
Events in quadrant B3,246,380804,759
Events in quadrant C3,243,220770,311
Events in quadrant D3,458,899753,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169041
B0137291
C0135492
D0144141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60824807.892141%
B6082971.594870%
C60821141.874383%
D60821402.301874%

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 7362 6082 382 382 5.19% 6.28%
B 7362 6083 12 12 0.16% 0.20%
C 7362 6083 1 1 0.01% 0.02%
D 7362 6083 61 61 0.83% 1.00%

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 15 174 1379679 8912.4 776 760 154.7
A 0 226 6896 39.66 776 760 154.7
A 12 194 5812 32.65 776 760 154.7
B 7 220 100545 676.59 798 780 147.5
B 12 111 16168 104.36 798 780 147.5
B 11 111 14009 89.72 798 780 147.5
C 14 238 121829 679.97 776 783 178.0
C 3 233 36753 202.06 776 783 178.0
C 5 218 31970 175.19 776 783 178.0
D 5 222 246419 1299.45 785 763 189.0
D 9 64 128572 676.07 785 763 189.0
D 2 234 25784 132.35 785 763 189.0

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