ASTROSAT CZTI

Data Quality Report

Orbit 22437

Creation date: 2024-06-27T18:40:57.603658
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/AS1A07_056T01_9000003330_22437cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22437cztM0_level2_quad_clean.evt
Size (bytes)264,156,48080,907,840
Size251.9 MB 77.2 MB
Events in quadrant A1,905,274545,913
Events in quadrant B1,991,014565,781
Events in quadrant C1,937,978536,395
Events in quadrant D1,891,982519,648

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083221
B085471
C083891
D084571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4005310.774032%
B4005380.948814%
C4005621.548065%
D4005180.449438%

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 5285 4006 0 0 0.00% 0.00%
B 5285 4006 1 1 0.02% 0.02%
C 5285 4006 0 0 0.00% 0.00%
D 5285 4006 2 2 0.04% 0.05%

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 3 1 6474 60.58 492 482 98.9
A 13 254 4503 40.65 492 482 98.9
A 3 137 4161 37.19 492 482 98.9
B 0 229 16219 169.22 495 484 93.0
B 4 216 12340 127.5 495 484 93.0
B 0 197 12164 125.61 495 484 93.0
C 14 238 75782 691.99 474 477 108.8
C 1 16 9632 84.13 474 477 108.8
C 0 10 3658 29.23 474 477 108.8
D 1 52 41918 355.63 476 461 116.6
D 2 136 20483 171.75 476 461 116.6
D 2 234 16591 138.37 476 461 116.6

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