ASTROSAT CZTI

Data Quality Report

Orbit 07087

Creation date: 2024-06-27T15:15:24.842007
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/AS1A02_090T01_9000000970_07087cztM0_level2.evt modeM0/AS1A02_090T01_9000000970_07087cztM0_level2_quad_clean.evt
Size (bytes)389,666,88081,659,520
Size371.6 MB 77.9 MB
Events in quadrant A2,760,105522,576
Events in quadrant B2,925,446526,176
Events in quadrant C2,680,512519,746
Events in quadrant D3,032,799491,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122152
B0126441
C0119941
D0131901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5910240.406091%
B5910360.609137%
C591090.152284%
D5910400.676819%

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 6905 5911 8 8 0.12% 0.14%
B 6905 5911 7 7 0.10% 0.12%
C 6905 5911 1 1 0.01% 0.02%
D 6905 5911 35 35 0.51% 0.59%

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 0 23 56750 387.06 697 683 144.9
A 13 248 10739 69.42 697 683 144.9
A 0 226 10238 65.96 697 683 144.9
B 0 219 107589 782.79 705 690 136.6
B 0 214 71744 520.31 705 690 136.6
B 12 111 13631 94.76 705 690 136.6
C 10 22 7578 43.46 682 688 158.5
C 13 61 5194 28.42 682 688 158.5
C 14 67 5075 27.67 682 688 158.5
D 1 83 277360 1649.8 677 657 167.7
D 12 233 86883 514.11 677 657 167.7
D 2 14 43071 252.89 677 657 167.7

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