ASTROSAT CZTI

Data Quality Report

Orbit 20240806_A13_074T02_9000006378_level2

Creation date: 2024-08-10T09:59:44.342049
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/AS1A13_074T02_9000006378cztM0_level2.fits modeM0/AS1A13_074T02_9000006378cztM0_level2_quad_clean.evt
Size (bytes)305,665,920341,936,640
Size291.5 MB 326.1 MB
Events in quadrant A1,735,7641,991,421
Events in quadrant B1,759,8842,130,511
Events in quadrant C1,841,4662,053,885
Events in quadrant D1,582,9701,843,626

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01289060
B0707290
C0708790
D0778410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06900
B06900
C06900
D06900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3400821406.292637%
B340083881.140908%
C340082680.788050%
D340086631.949541%

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 39132 34002 0 0 0.00% 0.00%
B 39132 34007 0 0 0.00% 0.00%
C 39132 34007 0 0 0.00% 0.00%
D 39132 33990 0 0 0.00% 0.00%

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 7 110 1386 8.15 452 423 118.2
A 0 29 1306 7.47 452 423 118.2
A 14 95 1271 7.17 452 423 118.2
B 2 9 1724 13.79 463 441 93.0
B 2 8 1390 10.2 463 441 93.0
B 3 17 1274 8.96 463 441 93.0
C 1 81 1400 7.48 486 453 126.7
C 3 202 1370 7.24 486 453 126.7
C 3 203 1363 7.18 486 453 126.7
D 6 67 1149 5.79 453 410 127.7
D 15 47 1132 5.66 453 410 127.7
D 10 189 1129 5.63 453 410 127.7

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