ASTROSAT CZTI

Data Quality Report

Orbit 38747

Creation date: 2024-06-27T21:55:55.372032
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_054T01_9000005392_38747cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38747cztM0_level2_quad_clean.evt
Size (bytes)387,443,52093,718,080
Size369.5 MB 89.4 MB
Events in quadrant A3,139,366633,213
Events in quadrant B2,935,905647,505
Events in quadrant C2,883,468619,161
Events in quadrant D4,955,142553,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128242
B0123191
C0119671
D0184761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5505741.344233%
B5505420.762943%
C5505300.544959%
D55053596.521344%

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 7208 5506 54 54 0.75% 0.98%
B 7208 5506 20 20 0.28% 0.36%
C 7208 5506 20 20 0.28% 0.36%
D 7208 5506 280 280 3.88% 5.09%

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 406524 3188.85 623 610 127.3
A 9 254 201096 1575.01 623 610 127.3
A 13 248 65728 511.57 623 610 127.3
B 5 200 207288 1706.96 621 603 121.1
B 4 171 194121 1598.22 621 603 121.1
B 5 184 32377 262.41 621 603 121.1
C 15 214 245031 1701.95 612 618 143.6
C 15 208 91194 630.72 612 618 143.6
C 0 10 57613 396.88 612 618 143.6
D 12 235 1312050 8920.77 597 581 147.0
D 2 16 419021 2846.28 597 581 147.0
D 10 118 371128 2520.51 597 581 147.0

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