ASTROSAT CZTI

Data Quality Report

Orbit 18665

Creation date: 2024-06-27T17:53:08.905612
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/AS1A06_005T01_9000002788_18665cztM0_level2.evt modeM0/AS1A06_005T01_9000002788_18665cztM0_level2_quad_clean.evt
Size (bytes)587,877,12063,745,920
Size560.6 MB 60.8 MB
Events in quadrant A2,618,252440,013
Events in quadrant B2,510,633447,625
Events in quadrant C2,547,902426,985
Events in quadrant D9,763,670239,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112911
B0109531
C0109761
D0327051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5354430.803138%
B5355400.746965%
C5355551.027077%
D5355282652.773109%

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 5354 5354 20 20 0.37% 0.37%
B 5355 5355 2 2 0.04% 0.04%
C 5355 5355 0 0 0.00% 0.00%
D 5354 5354 2605 2605 48.66% 48.66%

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 15 192 115948 909.75 624 611 126.8
A 6 16 93860 735.52 624 611 126.8
A 13 254 8454 61.86 624 611 126.8
B 4 80 19445 157.0 625 609 120.0
B 0 189 15292 122.38 625 609 120.0
B 12 111 14898 119.1 625 609 120.0
C 3 233 93064 657.49 600 604 140.6
C 14 238 92209 651.41 600 604 140.6
C 9 221 15750 107.7 600 604 140.6
D 7 238 7903853 78704.9 411 398 100.4
D 1 52 274559 2730.17 411 398 100.4
D 2 234 14486 140.29 411 398 100.4

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