ASTROSAT CZTI

Data Quality Report

Orbit 51316

Creation date: 2025-03-24T21:04:03.339576
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/AS1C07_001T03_9000006456_51316cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51316cztM0_level2_quad_clean.evt
Size (bytes)718,879,68081,771,840
Size685.6 MB 78.0 MB
Events in quadrant A7,001,853540,809
Events in quadrant B3,898,351635,080
Events in quadrant C10,250,928343,872
Events in quadrant D4,962,176507,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253441
B0159441
C0348767
D0192671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A642177312.038623%
B64222113.285581%
C6421282844.042984%
D64214837.522193%

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 7251 6421 390 390 5.38% 6.07%
B 7252 6422 108 108 1.49% 1.68%
C 7250 6420 2594 2594 35.78% 40.40%
D 7250 6420 365 365 5.03% 5.69%

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 12 3 2470781 15459.68 645 629 159.8
A 12 250 905181 5661.23 645 629 159.8
A 12 194 282785 1765.9 645 629 159.8
B 5 172 628589 4428.55 667 644 141.8
B 10 247 120449 844.92 667 644 141.8
B 5 185 108308 759.29 667 644 141.8
C 4 12 6804951 52774.79 464 460 128.9
C 15 179 282525 2187.66 464 460 128.9
C 3 233 267298 2069.56 464 460 128.9
D 8 176 1137135 6473.71 637 614 175.6
D 6 42 283824 1613.18 637 614 175.6
D 2 216 237489 1349.25 637 614 175.6

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