ASTROSAT CZTI

Data Quality Report

Orbit 26824

Creation date: 2024-06-27T19:33:23.633819
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_145T01_9000003866_26824cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26824cztM0_level2_quad_clean.evt
Size (bytes)520,407,36082,808,640
Size496.3 MB 79.0 MB
Events in quadrant A3,940,906541,858
Events in quadrant B3,683,120534,354
Events in quadrant C2,960,037529,598
Events in quadrant D4,789,000501,882

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156480
B0142650
C0120740
D0180550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57191031.801014%
B57203856.730769%
C5720901.573427%
D57204417.709790%

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 6719 5720 14 14 0.21% 0.24%
B 6720 5721 228 228 3.39% 3.99%
C 6720 5721 3 3 0.04% 0.05%
D 6720 5720 312 312 4.64% 5.45%

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 0 13 887277 5797.11 754 742 152.9
A 8 255 114367 743.0 754 742 152.9
A 6 16 22729 143.77 754 742 152.9
B 3 64 757059 5490.05 719 702 137.8
B 0 189 54189 388.23 719 702 137.8
B 10 246 21057 147.74 719 702 137.8
C 14 238 116160 682.75 718 724 169.1
C 15 208 42556 247.42 718 724 169.1
C 13 61 4909 24.75 718 724 169.1
D 1 52 1509786 8788.1 711 695 171.7
D 7 80 470281 2734.61 711 695 171.7
D 2 250 106522 616.28 711 695 171.7

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