ASTROSAT CZTI

Data Quality Report

Orbit 42109

Creation date: 2024-06-27T22:36:59.635568
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_044T22_9000005750_42109cztM0_level2.fits modeM0/AS1A12_044T22_9000005750_42109cztM0_level2_quad_clean.evt
Size (bytes)401,794,56087,514,560
Size383.2 MB 83.5 MB
Events in quadrant A6,585,382548,527
Events in quadrant B2,404,413617,226
Events in quadrant C2,512,051583,351
Events in quadrant D2,960,167530,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232932
B0108012
C0106843
D0125582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528971313.480809%
B5289120.226886%
C528830.056732%
D52881072.023449%

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 7052 5291 615 615 8.72% 11.62%
B 7052 5291 3 3 0.04% 0.06%
C 7051 5290 0 0 0.00% 0.00%
D 7051 5290 104 104 1.47% 1.97%

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 3416813 28798.35 576 565 118.6
A 10 83 526805 4436.11 576 565 118.6
A 15 223 393462 3312.05 576 565 118.6
B 5 255 46019 390.0 593 576 116.5
B 15 85 23857 199.8 593 576 116.5
B 12 111 14482 119.34 593 576 116.5
C 15 214 221635 1611.52 584 588 137.2
C 10 91 6637 44.1 584 588 137.2
C 7 220 4032 25.11 584 588 137.2
D 13 249 405907 2862.49 578 561 141.6
D 12 6 173041 1218.03 578 561 141.6
D 1 52 67447 472.34 578 561 141.6

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