ASTROSAT CZTI

Data Quality Report

Orbit 42078

Creation date: 2024-06-27T22:36:33.878909
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_044T22_9000005740_42078cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42078cztM0_level2_quad_clean.evt
Size (bytes)359,366,40090,391,680
Size342.7 MB 86.2 MB
Events in quadrant A4,718,782596,645
Events in quadrant B2,523,603621,709
Events in quadrant C2,586,731589,085
Events in quadrant D3,041,473540,964

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177993
B0114212
C0111672
D0128042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55512013.620969%
B5551300.540443%
C555140.072059%
D55511011.819492%

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 8716 5553 93 93 1.07% 1.67%
B 8716 5553 8 8 0.09% 0.14%
C 8716 5553 0 0 0.00% 0.00%
D 8716 5553 77 77 0.88% 1.39%

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 1721012 13640.04 609 596 126.1
A 10 83 566648 4487.85 609 596 126.1
A 15 223 54443 426.92 609 596 126.1
B 12 18 59246 490.29 611 593 119.6
B 3 112 20128 163.3 611 593 119.6
B 0 229 18307 148.07 611 593 119.6
C 15 214 229073 1623.93 602 603 140.7
C 12 249 4947 30.88 602 603 140.7
C 13 61 4171 25.36 602 603 140.7
D 12 6 180793 1216.64 597 579 148.1
D 1 52 165361 1112.46 597 579 148.1
D 13 249 132119 888.04 597 579 148.1

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