ASTROSAT CZTI

Data Quality Report

Orbit 39190

Creation date: 2024-06-27T22:01:35.369366
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_9000005444_39190cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39190cztM0_level2_quad_clean.evt
Size (bytes)505,992,96085,844,160
Size482.6 MB 81.9 MB
Events in quadrant A2,811,249632,040
Events in quadrant B2,505,488631,769
Events in quadrant C2,718,309594,548
Events in quadrant D10,265,083353,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119013
B0114142
C0116562
D0343142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5529110.198951%
B5529150.271297%
C5529240.434075%
D5529251245.433171%

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 7023 5530 8 8 0.11% 0.14%
B 7023 5530 6 6 0.09% 0.11%
C 7023 5530 19 19 0.27% 0.34%
D 7023 5530 2339 2339 33.30% 42.30%

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 445990 3635.05 602 590 122.5
A 2 79 16319 128.37 602 590 122.5
A 13 254 7329 55.0 602 590 122.5
B 5 172 80543 693.49 597 580 115.3
B 0 213 38877 332.13 597 580 115.3
B 5 184 33202 282.92 597 580 115.3
C 15 214 232583 1688.7 584 586 137.4
C 9 187 186184 1350.96 584 586 137.4
C 0 10 12900 89.63 584 586 137.4
D 12 235 7182915 57811.34 504 488 124.2
D 5 222 690920 5557.29 504 488 124.2
D 2 249 210560 1690.87 504 488 124.2

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