ASTROSAT CZTI

Data Quality Report

Orbit 36516

Creation date: 2022-06-30T10:05:13.440296
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/AS1T05_035T01_9000005214_36516cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36516cztM0_level2_quad_clean.evt
Size (bytes)428,100,48059,169,600
Size408.3 MB 56.4 MB
Events in quadrant A2,817,210357,782
Events in quadrant B3,188,051358,198
Events in quadrant C2,916,051350,634
Events in quadrant D3,662,562332,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118803
B0131262
C0119842
D0147572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5609250.445712%
B56091031.836334%
C5609520.927081%
D56092624.671064%

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 7162 5610 16 16 0.22% 0.29%
B 7162 5610 62 62 0.87% 1.11%
C 7162 5610 42 42 0.59% 0.75%
D 7162 5610 216 216 3.02% 3.85%

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 10 83 200537 1513.72 650 637 132.1
A 9 143 71195 534.29 650 637 132.1
A 15 223 21061 154.66 650 637 132.1
B 5 172 211776 1707.73 642 625 123.6
B 5 255 199310 1606.91 642 625 123.6
B 0 189 71338 571.91 642 625 123.6
C 15 214 236482 1623.65 624 631 145.3
C 0 10 218089 1497.02 624 631 145.3
C 12 249 23899 160.18 624 631 145.3
D 13 249 691154 4516.4 616 598 152.9
D 13 171 164488 1071.88 616 598 152.9
D 2 250 71973 466.81 616 598 152.9

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