ASTROSAT CZTI

Data Quality Report

Orbit 11309

Creation date: 2024-06-27T16:11:06.047687
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/AS1A04_144T01_9000001652_11309cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11309cztM0_level2_quad_clean.evt
Size (bytes)1,177,061,760152,078,400
Size1.1 GB 145.0 MB
Events in quadrant A8,557,940963,135
Events in quadrant B7,736,5001,000,915
Events in quadrant C5,760,834987,174
Events in quadrant D12,750,228791,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336093
B0313182
C0259572
D0463972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124639357.502207%
B124639197.373827%
C124632431.949771%
D12463268221.519698%

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 12588 12466 429 429 3.41% 3.44%
B 12588 12466 320 320 2.54% 2.57%
C 12588 12466 15 15 0.12% 0.12%
D 12588 12465 2056 2056 16.33% 16.49%

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 8 5 2349445 7793.21 1469 1436 301.3
A 0 8 286174 945.07 1469 1436 301.3
A 1 162 65726 213.38 1469 1436 301.3
B 4 239 1455540 5107.87 1477 1440 284.7
B 3 64 401123 1403.98 1477 1440 284.7
B 3 189 60547 207.63 1477 1440 284.7
C 14 234 100184 292.67 1450 1453 337.3
C 13 61 10704 27.42 1450 1453 337.3
C 8 128 5063 10.7 1450 1453 337.3
D 10 253 4361132 14088.16 1275 1234 309.5
D 1 52 2959438 9558.86 1275 1234 309.5
D 13 104 314806 1013.25 1275 1234 309.5

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