ASTROSAT CZTI

Data Quality Report

Orbit 39609

Creation date: 2024-06-27T22:06:46.001273
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_018T01_9000005488_39609cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39609cztM0_level2_quad_clean.evt
Size (bytes)378,123,84090,282,240
Size360.6 MB 86.1 MB
Events in quadrant A2,847,556608,154
Events in quadrant B2,541,639624,449
Events in quadrant C4,749,833565,475
Events in quadrant D3,431,255551,695

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120463
B0116442
C0179232
D0140362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5485220.401094%
B5485330.601641%
C54854197.639015%
D5485991.804923%

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 7309 5486 13 13 0.18% 0.24%
B 7309 5486 14 14 0.19% 0.26%
C 7309 5486 390 390 5.34% 7.11%
D 7309 5486 98 98 1.34% 1.79%

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 436477 3677.7 579 569 118.5
A 15 222 105874 888.45 579 569 118.5
A 13 248 21988 180.71 579 569 118.5
B 5 255 190485 1712.22 578 562 110.9
B 5 172 52671 469.78 578 562 110.9
B 4 170 15743 136.86 578 562 110.9
C 9 187 1770492 13813.98 556 562 128.1
C 15 208 542861 4232.54 556 562 128.1
C 15 214 239846 1867.57 556 562 128.1
D 12 227 350695 2535.5 563 546 138.1
D 2 249 289851 2094.92 563 546 138.1
D 12 0 155003 1118.45 563 546 138.1

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