ASTROSAT CZTI

Data Quality Report

Orbit 15098

Creation date: 2024-06-27T17:03:42.910649
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/AS1G08_028T01_9000002220_15098cztM0_level2.evt modeM0/AS1G08_028T01_9000002220_15098cztM0_level2_quad_clean.evt
Size (bytes)450,959,04083,894,400
Size430.1 MB 80.0 MB
Events in quadrant A3,070,681535,902
Events in quadrant B3,709,580541,927
Events in quadrant C3,521,339523,690
Events in quadrant D2,930,619502,311

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129662
B0148351
C0140531
D0129941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6261190.303466%
B62611502.395783%
C6261170.271522%
D6261150.239578%

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 7467 6263 0 0 0.00% 0.00%
B 7467 6263 36 36 0.48% 0.57%
C 7467 6263 0 0 0.00% 0.00%
D 7467 6263 5 5 0.07% 0.08%

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 16287 96.61 795 780 160.5
A 0 226 6996 38.72 795 780 160.5
A 12 194 5753 30.98 795 780 160.5
B 10 245 484551 3236.23 789 772 149.5
B 3 64 135161 898.99 789 772 149.5
B 12 111 18412 118.0 789 772 149.5
C 3 233 527620 2988.81 762 770 176.3
C 3 9 17792 96.57 762 770 176.3
C 13 61 5488 26.77 762 770 176.3
D 13 104 56657 303.66 760 738 184.1
D 2 234 23100 121.43 760 738 184.1
D 14 226 7400 36.18 760 738 184.1

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