ASTROSAT CZTI

Data Quality Report

Orbit 39340

Creation date: 2024-06-27T22:03:26.178363
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_9000005470_39340cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39340cztM0_level2_quad_clean.evt
Size (bytes)459,797,76092,016,000
Size438.5 MB 87.8 MB
Events in quadrant A2,943,767627,512
Events in quadrant B2,935,986636,013
Events in quadrant C3,183,014610,445
Events in quadrant D7,515,986514,836

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124383
B0126622
C0130682
D0263392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5686260.457263%
B56861292.268730%
C5686921.618009%
D568685615.054520%

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 7298 5687 14 14 0.19% 0.25%
B 7298 5687 82 82 1.12% 1.44%
C 7298 5687 84 84 1.15% 1.48%
D 7298 5687 762 762 10.44% 13.40%

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 442027 3475.45 621 608 127.0
A 13 248 76922 600.85 621 608 127.0
A 5 98 18097 137.7 621 608 127.0
B 5 184 422612 3534.08 616 598 119.4
B 5 172 85082 707.5 616 598 119.4
B 12 111 15193 122.22 616 598 119.4
C 14 254 463826 3262.6 609 613 142.0
C 15 214 256676 1803.55 609 613 142.0
C 9 187 68113 475.43 609 613 142.0
D 12 235 3955681 27928.37 579 563 141.6
D 12 227 373860 2635.97 579 563 141.6
D 13 249 332936 2346.99 579 563 141.6

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