ASTROSAT CZTI

Data Quality Report

Orbit 35729

Creation date: 2024-06-27T21:17:14.882867
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/AS1A09_029T05_9000005124_35729cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35729cztM0_level2_quad_clean.evt
Size (bytes)403,024,32063,282,240
Size384.4 MB 60.4 MB
Events in quadrant A2,620,365389,988
Events in quadrant B2,957,492392,700
Events in quadrant C3,118,540374,630
Events in quadrant D3,129,432368,043

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114123
B0124332
C0127712
D0132042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558350.089558%
B5583721.289629%
C55831142.041913%
D5583761.361275%

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 7136 5584 0 0 0.00% 0.00%
B 7136 5584 56 56 0.78% 1.00%
C 7136 5584 91 91 1.28% 1.63%
D 7136 5584 88 88 1.23% 1.58%

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 150624 1161.86 633 620 129.1
A 13 6 13802 102.1 633 620 129.1
A 13 254 8797 63.34 633 620 129.1
B 5 172 306038 2513.09 626 610 121.5
B 5 255 78082 637.45 626 610 121.5
B 15 85 44085 357.72 626 610 121.5
C 0 10 296691 2102.33 605 609 140.8
C 15 214 235058 1664.7 605 609 140.8
C 1 23 120337 850.13 605 609 140.8
D 14 52 303355 2018.87 609 590 150.0
D 13 249 198991 1322.96 609 590 150.0
D 10 203 51519 339.6 609 590 150.0

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