ASTROSAT CZTI

Data Quality Report

Orbit 19769

Creation date: 2024-06-27T18:06:46.733423
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_088T05_9000002952_19769cztM0_level2.evt modeM0/AS1A05_088T05_9000002952_19769cztM0_level2_quad_clean.evt
Size (bytes)813,654,72092,900,160
Size776.0 MB 88.6 MB
Events in quadrant A3,087,135656,619
Events in quadrant B3,126,174668,086
Events in quadrant C8,546,819539,386
Events in quadrant D9,453,360504,955

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135262
B0135022
C0297652
D0325452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6349580.913530%
B6349560.882029%
C6349201031.658529%
D6349214433.769097%

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 7454 6349 3 3 0.04% 0.05%
B 7454 6349 0 0 0.00% 0.00%
C 7454 6349 1527 1527 20.49% 24.05%
D 7454 6349 1886 1886 25.30% 29.71%

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 29518 180.89 793 777 158.9
A 0 226 8417 48.09 793 777 158.9
A 3 137 6283 34.65 793 777 158.9
B 12 111 17758 113.12 792 770 150.2
B 11 111 15811 100.15 792 770 150.2
B 3 64 15191 96.02 792 770 150.2
C 3 233 5716558 35462.75 696 701 161.2
C 14 238 105983 653.2 696 701 161.2
C 10 223 5920 32.38 696 701 161.2
D 7 238 6748389 40716.98 676 655 165.7
D 1 52 74733 447.0 676 655 165.7
D 12 233 67072 400.77 676 655 165.7

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