ASTROSAT CZTI

Data Quality Report

Orbit 39297

Creation date: 2024-06-27T22:02:52.979710
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_042T01_9000005462_39297cztM0_level2.fits modeM0/AS1A12_042T01_9000005462_39297cztM0_level2_quad_clean.evt
Size (bytes)606,876,48076,152,960
Size578.8 MB 72.6 MB
Events in quadrant A3,401,065599,122
Events in quadrant B2,645,751621,121
Events in quadrant C2,748,269593,151
Events in quadrant D13,245,251110,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138173
B0118492
C0117402
D0430952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54501853.394495%
B5450761.394495%
C5450500.917431%
D5450457583.944954%

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 7121 5451 135 135 1.90% 2.48%
B 7121 5451 44 44 0.62% 0.81%
C 7121 5451 47 47 0.66% 0.86%
D 7121 5450 4028 4028 56.57% 73.91%

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 13 248 709234 5946.27 586 574 119.2
A 10 83 424703 3558.81 586 574 119.2
A 13 254 6859 52.74 586 574 119.2
B 5 172 228401 2000.54 589 573 113.9
B 5 255 61542 535.36 589 573 113.9
B 5 184 16769 142.22 589 573 113.9
C 15 214 230423 1711.53 576 578 134.3
C 14 254 212930 1581.27 576 578 134.3
C 10 20 37410 274.27 576 578 134.3
D 12 235 11624460 153444.11 312 302 75.8
D 12 227 153483 2022.06 312 302 75.8
D 5 222 117657 1549.14 312 302 75.8

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