ASTROSAT CZTI

Data Quality Report

Orbit 38336

Creation date: 2024-06-27T21:51:25.876194
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/AS1A10_094T24_9000005374_38336cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38336cztM0_level2_quad_clean.evt
Size (bytes)508,982,40093,568,320
Size485.4 MB 89.2 MB
Events in quadrant A3,330,746648,349
Events in quadrant B3,109,842669,017
Events in quadrant C2,926,640639,743
Events in quadrant D9,018,215465,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136803
B0133642
C0123902
D0308982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5871871.481860%
B5871420.715381%
C5871430.732414%
D5871143624.459206%

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 7244 5872 46 46 0.64% 0.78%
B 7244 5872 16 16 0.22% 0.27%
C 7244 5872 33 33 0.46% 0.56%
D 7244 5872 1322 1322 18.25% 22.51%

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 424255 3265.66 641 628 129.7
A 13 248 281927 2168.48 641 628 129.7
A 9 143 62834 479.53 641 628 129.7
B 0 155 158552 1283.69 642 625 123.0
B 0 183 149954 1213.8 642 625 123.0
B 0 229 126685 1024.66 642 625 123.0
C 15 214 248664 1696.13 633 637 146.2
C 3 9 146079 994.6 633 637 146.2
C 10 20 30693 205.54 633 637 146.2
D 10 203 4358627 29907.99 592 577 145.7
D 2 16 1676497 11501.34 592 577 145.7
D 12 227 302746 2073.7 592 577 145.7

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