ASTROSAT CZTI

Data Quality Report

Orbit 41987

Creation date: 2024-06-27T22:35:24.418042
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_104T01_9000005728_41987cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41987cztM0_level2_quad_clean.evt
Size (bytes)356,886,72096,073,920
Size340.4 MB 91.6 MB
Events in quadrant A3,206,841644,341
Events in quadrant B2,761,120657,390
Events in quadrant C2,698,817627,248
Events in quadrant D4,083,583566,519

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130913
B0123512
C0118482
D0163082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5913160.270590%
B5913260.439709%
C591350.084559%
D59132394.041941%

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 7196 5914 7 7 0.10% 0.12%
B 7196 5914 13 13 0.18% 0.22%
C 7196 5914 0 0 0.00% 0.00%
D 7196 5914 197 197 2.74% 3.33%

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 582305 4375.23 643 630 132.9
A 2 79 104239 779.32 643 630 132.9
A 13 248 20173 147.0 643 630 132.9
B 5 255 84879 674.39 637 617 124.9
B 0 190 81815 649.86 637 617 124.9
B 4 81 64356 510.13 637 617 124.9
C 15 214 246106 1671.43 628 632 146.9
C 13 61 4113 23.7 628 632 146.9
C 3 233 3199 17.48 628 632 146.9
D 2 249 516671 3407.36 620 602 151.5
D 13 249 369634 2436.54 620 602 151.5
D 12 233 345729 2278.71 620 602 151.5

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