ASTROSAT CZTI

Data Quality Report

Orbit 17082

Creation date: 2024-06-27T17:31:49.066421
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/AS1A05_004T04_9000002534_17082cztM0_level2.evt modeM0/AS1A05_004T04_9000002534_17082cztM0_level2_quad_clean.evt
Size (bytes)499,677,12068,685,120
Size476.5 MB 65.5 MB
Events in quadrant A3,143,456414,145
Events in quadrant B3,346,698419,614
Events in quadrant C5,062,476392,287
Events in quadrant D3,127,460388,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136422
B0141332
C0196932
D0139672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6669711.064627%
B6670831.244378%
C66701432.143928%
D6670811.214393%

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 7634 6670 0 0 0.00% 0.00%
B 7635 6671 2 2 0.03% 0.03%
C 7635 6672 0 0 0.00% 0.00%
D 7635 6672 17 17 0.22% 0.25%

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 12 189 22371 131.86 809 791 163.7
A 4 2 10964 62.16 809 791 163.7
A 0 226 7075 38.4 809 791 163.7
B 0 197 93368 596.56 814 792 155.2
B 3 209 18462 113.87 814 792 155.2
B 12 111 18213 112.26 814 792 155.2
C 3 233 1904715 10633.39 773 780 179.1
C 14 238 119553 663.34 773 780 179.1
C 7 247 23280 125.66 773 780 179.1
D 10 70 80215 417.9 779 754 190.1
D 1 52 80175 417.69 779 754 190.1
D 2 234 24989 127.46 779 754 190.1

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