ASTROSAT CZTI

Data Quality Report

Orbit 23479

Creation date: 2024-06-27T18:52:45.680006
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_148T02_9000003444_23479cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23479cztM0_level2_quad_clean.evt
Size (bytes)107,795,52027,777,600
Size102.8 MB 26.5 MB
Events in quadrant A790,371188,429
Events in quadrant B816,995189,771
Events in quadrant C783,516179,168
Events in quadrant D777,635180,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122
B0123
C0122
D0123

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346
B0346
C0344
D0346

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03558437
B03767508
C03670543
D03532450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1383261.879971%
B1362312.276065%
C1347392.895323%
D1380231.666667%

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 2793 1456 0 0 0.00% 0.00%
B 2793 1437 0 0 0.00% 0.00%
C 2793 1427 0 0 0.00% 0.00%
D 2793 1447 0 0 0.00% 0.00%

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 13 254 2074 44.66 204 200 42.0
A 0 226 1783 37.72 204 200 42.0
A 3 137 1645 34.43 204 200 42.0
B 0 189 43839 1108.15 196 191 39.4
B 0 230 6068 149.21 196 191 39.4
B 12 111 4440 107.88 196 191 39.4
C 14 238 29514 628.68 191 192 46.6
C 7 247 5256 108.58 191 192 46.6
C 5 4 1906 36.75 191 192 46.6
D 13 172 10124 200.92 200 195 49.4
D 2 234 5067 98.59 200 195 49.4
D 12 227 3931 75.6 200 195 49.4

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