ASTROSAT CZTI

Data Quality Report

Orbit 40576

Creation date: 2024-06-27T22:17:46.834603
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_054T02_9000005550_40576cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40576cztM0_level2_quad_clean.evt
Size (bytes)302,457,60088,447,680
Size288.4 MB 84.4 MB
Events in quadrant A2,900,908619,490
Events in quadrant B2,916,158633,884
Events in quadrant C2,474,431594,600
Events in quadrant D2,510,065476,005

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114683
B0117652
C0102952
D0108842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5050120.237624%
B5050280.554455%
C5050110.217822%
D505074714.792079%

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 9087 5052 8 8 0.09% 0.16%
B 9087 5052 17 17 0.19% 0.34%
C 9087 5052 6 6 0.07% 0.12%
D 9087 5052 19 19 0.21% 0.38%

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 473298 3994.06 589 581 118.4
A 12 189 73831 618.9 589 581 118.4
A 2 79 45360 378.34 589 581 118.4
B 0 190 489570 4416.27 582 567 110.7
B 3 112 63556 568.86 582 567 110.7
B 0 230 36931 328.41 582 567 110.7
C 15 214 224732 1721.29 565 570 130.2
C 0 10 33629 253.85 565 570 130.2
C 14 254 7670 54.52 565 570 130.2
D 12 191 207578 1606.67 520 504 128.9
D 12 227 99745 770.0 520 504 128.9
D 13 249 83724 645.7 520 504 128.9

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