ASTROSAT CZTI

Data Quality Report

Orbit 39886

Creation date: 2024-06-27T22:09:55.014694
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_032T03_9000005502_39886cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39886cztM0_level2_quad_clean.evt
Size (bytes)479,687,04092,911,680
Size457.5 MB 88.6 MB
Events in quadrant A5,316,103559,894
Events in quadrant B3,775,657650,176
Events in quadrant C3,039,851644,068
Events in quadrant D5,160,966542,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195913
B0152552
C0125972
D0194352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596699316.644318%
B59661702.849480%
C5966170.284948%
D596668911.548776%

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 7278 5967 605 605 8.31% 10.14%
B 7278 5967 104 104 1.43% 1.74%
C 7278 5967 14 14 0.19% 0.23%
D 7278 5967 643 643 8.83% 10.78%

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 14 250 2285563 18604.72 595 582 122.8
A 10 83 519105 4221.91 595 582 122.8
A 6 10 100274 811.71 595 582 122.8
B 0 221 366483 2928.26 647 629 124.9
B 5 255 266401 2127.22 647 629 124.9
B 0 183 172462 1375.34 647 629 124.9
C 15 214 253449 1684.23 639 642 150.1
C 15 159 67370 444.55 639 642 150.1
C 1 16 51511 338.9 639 642 150.1
D 12 233 1377134 9062.32 612 594 151.9
D 12 227 748361 4922.85 612 594 151.9
D 2 250 120862 791.77 612 594 151.9

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