ASTROSAT CZTI

Data Quality Report

Orbit 38495

Creation date: 2024-06-27T21:53:32.794354
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_018T01_9000005386_38495cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38495cztM0_level2_quad_clean.evt
Size (bytes)393,690,24093,127,680
Size375.5 MB 88.8 MB
Events in quadrant A3,900,833643,397
Events in quadrant B4,742,149577,518
Events in quadrant C2,659,128623,537
Events in quadrant D2,829,364578,410

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156973
B0177932
C0114712
D0124292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5675320.563877%
B567575913.374449%
C567580.140969%
D5675380.669604%

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 7107 5676 14 14 0.20% 0.25%
B 7107 5676 612 612 8.61% 10.78%
C 7107 5676 2 2 0.03% 0.04%
D 7107 5676 25 25 0.35% 0.44%

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 15 222 892564 7044.12 628 616 126.6
A 10 83 424500 3347.6 628 616 126.6
A 12 189 65793 514.73 628 616 126.6
B 5 184 1324015 11862.62 581 565 111.6
B 8 3 709566 6355.06 581 565 111.6
B 0 229 191694 1713.17 581 565 111.6
C 15 214 235291 1636.46 615 619 143.4
C 0 10 18011 121.28 615 619 143.4
C 14 254 5627 34.92 615 619 143.4
D 13 249 170576 1137.53 614 598 149.4
D 2 250 62058 411.31 614 598 149.4
D 7 223 42548 280.74 614 598 149.4

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