ASTROSAT CZTI

Data Quality Report

Orbit 42054

Creation date: 2024-06-27T22:36:15.555170
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_037T03_9000005738_42054cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42054cztM0_level2_quad_clean.evt
Size (bytes)209,004,48048,660,480
Size199.3 MB 46.4 MB
Events in quadrant A3,073,616321,892
Events in quadrant B1,355,126345,474
Events in quadrant C1,353,222320,931
Events in quadrant D1,741,354290,193

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110641
B056551
C054981
D069411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27211937.092981%
B272190.330761%
C272120.073502%
D2721802.940096%

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 4815 2722 156 156 3.24% 5.73%
B 4815 2722 6 6 0.12% 0.22%
C 4815 2722 0 0 0.00% 0.00%
D 4815 2722 64 64 1.33% 2.35%

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 15 223 1524047 22395.68 323 317 68.0
A 10 83 269650 3958.64 323 317 68.0
A 12 189 10501 149.68 323 317 68.0
B 5 255 52636 808.12 327 318 64.7
B 3 112 7828 116.0 327 318 64.7
B 12 111 7777 115.21 327 318 64.7
C 15 214 113271 1506.88 316 319 75.0
C 12 249 2859 33.89 316 319 75.0
C 0 207 2467 28.66 316 319 75.0
D 13 249 164764 2104.24 312 304 78.2
D 12 6 163331 2085.91 312 304 78.2
D 1 52 105113 1341.02 312 304 78.2

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