ASTROSAT CZTI

Data Quality Report

Orbit 41646

Creation date: 2024-06-27T22:31:06.399271
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/AS1T05_116T01_9000005682_41646cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41646cztM0_level2_quad_clean.evt
Size (bytes)351,990,72092,928,960
Size335.7 MB 88.6 MB
Events in quadrant A2,997,190641,462
Events in quadrant B2,732,152653,870
Events in quadrant C3,031,729593,855
Events in quadrant D3,844,678543,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122012
B0114032
C0123313
D0151052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5442170.312385%
B5442170.312385%
C54411853.400110%
D54413366.175335%

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 7296 5443 4 4 0.05% 0.07%
B 7296 5443 8 8 0.11% 0.15%
C 7295 5442 172 172 2.36% 3.16%
D 7295 5442 295 295 4.04% 5.42%

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 541848 4258.76 622 609 127.1
A 13 248 23624 181.09 622 609 127.1
A 2 79 17497 132.88 622 609 127.1
B 7 202 136306 1146.96 612 595 118.3
B 0 186 93844 788.09 612 595 118.3
B 0 190 70554 591.26 612 595 118.3
C 0 10 497710 3610.28 592 596 137.7
C 15 214 221237 1602.4 592 596 137.7
C 15 159 6745 44.66 592 596 137.7
D 13 249 990442 6839.67 593 576 144.7
D 2 249 200358 1380.43 593 576 144.7
D 1 47 125007 859.78 593 576 144.7

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