ASTROSAT CZTI

Data Quality Report

Orbit 39574

Creation date: 2024-06-27T22:06:18.833380
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_018T01_9000005488_39574cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39574cztM0_level2_quad_clean.evt
Size (bytes)511,536,96092,522,880
Size487.8 MB 88.2 MB
Events in quadrant A3,897,009637,759
Events in quadrant B2,539,526670,936
Events in quadrant C7,786,009531,735
Events in quadrant D4,277,724568,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151503
B0114042
C0271702
D0164702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56152083.704363%
B5615110.195904%
C5615100517.898486%
D56152694.790739%

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 7407 5616 181 181 2.44% 3.22%
B 7407 5616 1 1 0.01% 0.02%
C 7407 5616 1006 1006 13.58% 17.91%
D 7407 5616 274 274 3.70% 4.88%

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 905286 7139.05 618 607 126.7
A 10 83 463085 3649.53 618 607 126.7
A 9 143 50741 395.62 618 607 126.7
B 5 172 45160 376.43 619 602 118.4
B 5 255 30100 249.2 619 602 118.4
B 0 230 17253 140.67 619 602 118.4
C 3 233 2623709 19914.83 569 573 131.7
C 9 187 2261012 17161.24 569 573 131.7
C 15 208 439814 3334.71 569 573 131.7
D 12 227 1237995 8321.47 606 588 148.7
D 1 52 198440 1330.54 606 588 148.7
D 13 249 189945 1273.41 606 588 148.7

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