ASTROSAT CZTI

Data Quality Report

Orbit 28198

Creation date: 2024-06-27T19:49:04.257035
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/AS1A10_045T09_9000004072_28198cztM0_level2.evt modeM0/AS1A10_045T09_9000004072_28198cztM0_level2_quad_clean.evt
Size (bytes)476,867,52095,512,320
Size454.8 MB 91.1 MB
Events in quadrant A2,949,649633,986
Events in quadrant B2,978,003655,317
Events in quadrant C2,920,188611,000
Events in quadrant D5,191,534577,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123580
B0124680
C0123910
D0195400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5933370.623631%
B5934590.994270%
C5934751.263903%
D59344768.021571%

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 7188 5934 1 1 0.01% 0.02%
B 7189 5935 1 1 0.01% 0.02%
C 7189 5935 0 0 0.00% 0.00%
D 7189 5935 228 228 3.17% 3.84%

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 4 2 37657 246.35 746 733 149.9
A 12 96 18717 119.98 746 733 149.9
A 6 16 14320 90.65 746 733 149.9
B 4 200 18790 129.31 745 728 139.7
B 0 230 17805 122.26 745 728 139.7
B 12 111 17348 118.98 745 728 139.7
C 14 238 116182 701.2 708 712 164.7
C 3 233 38353 228.58 708 712 164.7
C 13 61 4910 25.49 708 712 164.7
D 1 52 2136552 12957.61 691 672 164.8
D 5 222 228840 1384.21 691 672 164.8
D 8 195 127614 770.11 691 672 164.8

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