ASTROSAT CZTI

Data Quality Report

Orbit 36406

Creation date: 2022-06-28T12:52:35.017289
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/AS1T04_084T01_9000005198_36406cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36406cztM0_level2_quad_clean.evt
Size (bytes)425,782,08052,335,360
Size406.1 MB 49.9 MB
Events in quadrant A2,766,774320,177
Events in quadrant B3,667,889312,280
Events in quadrant C2,938,519308,261
Events in quadrant D3,186,160296,881

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111833
B0140542
C0114522
D0125282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4952110.222132%
B49522986.017771%
C4952891.797254%
D49521032.079968%

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 7075 4953 0 0 0.00% 0.00%
B 7075 4953 175 175 2.47% 3.53%
C 7075 4953 68 68 0.96% 1.37%
D 7075 4953 76 76 1.07% 1.53%

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 182624 1401.44 646 636 129.9
A 15 223 67679 516.28 646 636 129.9
A 7 16 10773 78.06 646 636 129.9
B 5 172 708480 5988.32 629 615 118.2
B 0 189 163451 1377.54 629 615 118.2
B 5 255 124722 1049.91 629 615 118.2
C 0 10 315583 2217.73 616 621 142.0
C 15 214 212336 1490.74 616 621 142.0
C 15 159 8285 53.96 616 621 142.0
D 13 171 230112 1525.52 622 607 150.4
D 2 250 148631 983.92 622 607 150.4
D 2 249 100361 663.06 622 607 150.4

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