ASTROSAT CZTI

Data Quality Report

Orbit 36719

Creation date: 2024-06-27T21:30:44.473551
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/AS1A11_101T01_9000005238_36719cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36719cztM0_level2_quad_clean.evt
Size (bytes)436,587,84082,382,400
Size416.4 MB 78.6 MB
Events in quadrant A2,755,464536,101
Events in quadrant B3,178,655539,737
Events in quadrant C3,550,433524,946
Events in quadrant D3,357,012502,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119273
B0131082
C0140912
D0137582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5599230.410788%
B5599921.643151%
C55992354.197178%
D55991382.464726%

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 7212 5600 11 11 0.15% 0.20%
B 7212 5600 47 47 0.65% 0.84%
C 7212 5600 169 169 2.34% 3.02%
D 7212 5600 107 107 1.48% 1.91%

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 228165 1748.32 635 622 130.1
A 15 223 49184 373.12 635 622 130.1
A 13 6 11648 84.72 635 622 130.1
B 5 255 273798 2222.89 633 616 122.9
B 0 221 111036 898.49 633 616 122.9
B 0 189 95180 769.47 633 616 122.9
C 14 254 470302 3263.79 608 611 143.9
C 0 10 401828 2787.98 608 611 143.9
C 15 214 248558 1722.94 608 611 143.9
D 2 153 164598 1076.8 615 596 152.3
D 13 249 164559 1076.55 615 596 152.3
D 12 233 154594 1011.12 615 596 152.3

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