ASTROSAT CZTI

Data Quality Report

Orbit 39664

Creation date: 2024-06-27T22:07:28.526767
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/AS1A12_051T01_9000005490_39664cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39664cztM0_level2_quad_clean.evt
Size (bytes)513,008,64088,197,120
Size489.2 MB 84.1 MB
Events in quadrant A3,936,158646,372
Events in quadrant B2,820,152658,178
Events in quadrant C7,868,357436,230
Events in quadrant D3,965,540569,315

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152152
B0117591
C0268241
D0152661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51492244.350359%
B51491392.699553%
C5149183835.696252%
D51492304.466887%

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 7241 5150 245 245 3.38% 4.76%
B 7241 5150 105 105 1.45% 2.04%
C 7241 5149 1703 1703 23.52% 33.07%
D 7241 5150 240 240 3.31% 4.66%

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 15 222 994891 8261.0 599 590 120.4
A 10 83 445480 3696.3 599 590 120.4
A 15 174 98078 809.96 599 590 120.4
B 5 172 450716 4033.62 591 577 111.6
B 0 186 23007 200.99 591 577 111.6
B 12 111 13438 115.25 591 577 111.6
C 15 208 5171935 45361.92 492 496 114.0
C 9 187 392786 3441.02 492 496 114.0
C 15 214 191138 1672.24 492 496 114.0
D 9 64 612323 4419.57 569 553 138.4
D 12 227 473869 3419.35 569 553 138.4
D 13 174 303124 2185.85 569 553 138.4

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