ASTROSAT CZTI

Data Quality Report

Orbit 11321

Creation date: 2024-06-27T16:11:16.921315
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/AS1G08_028T01_9000001656_11321cztM0_level2.evt modeM0/AS1G08_028T01_9000001656_11321cztM0_level2_quad_clean.evt
Size (bytes)661,397,76057,994,560
Size630.8 MB 55.3 MB
Events in quadrant A7,574,195299,537
Events in quadrant B3,618,663350,303
Events in quadrant C3,174,308345,274
Events in quadrant D5,232,961316,796

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268442
B0147931
C0137411
D0198451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358189929.867883%
B63581822.862535%
C6358641.006606%
D635873311.528783%

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 7228 6358 1218 1218 16.85% 19.16%
B 7228 6359 71 71 0.98% 1.12%
C 7228 6359 32 32 0.44% 0.50%
D 7228 6359 603 603 8.34% 9.48%

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 14 238 4169544 32838.87 614 602 127.0
A 8 5 581995 4579.65 614 602 127.0
A 1 162 105429 825.73 614 602 127.0
B 4 239 535484 3675.99 760 743 145.5
B 0 219 29278 196.16 760 743 145.5
B 0 214 23098 153.67 760 743 145.5
C 9 204 277582 1599.83 737 742 173.0
C 9 54 21441 119.62 737 742 173.0
C 13 61 5595 28.05 737 742 173.0
D 10 253 1334168 7981.23 686 668 167.1
D 7 80 452564 2704.68 686 668 167.1
D 2 120 375356 2242.57 686 668 167.1

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