ASTROSAT CZTI

Data Quality Report

Orbit 18541

Creation date: 2024-06-27T17:51:23.622210
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/AS1A05_104T02_9000002752_18541cztM0_level2.evt modeM0/AS1A05_104T02_9000002752_18541cztM0_level2_quad_clean.evt
Size (bytes)231,868,80046,284,480
Size221.1 MB 44.1 MB
Events in quadrant A1,931,543314,536
Events in quadrant B1,132,640341,289
Events in quadrant C1,121,164318,326
Events in quadrant D2,694,983277,358

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113984357912052046
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071601
B046851
C046351
D094871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A205826913.070943%
B2058100.485909%
C2058231.117590%
D205851124.829932%

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 2058 2058 188 188 9.14% 9.14%
B 2058 2058 1 1 0.05% 0.05%
C 2058 2058 2 2 0.10% 0.10%
D 2058 2058 480 480 23.32% 23.32%

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 844960 14975.31 276 271 56.4
A 14 111 20055 350.75 276 271 56.4
A 13 254 4077 67.48 276 271 56.4
B 3 64 9489 169.34 286 281 54.4
B 12 111 5588 97.6 286 281 54.4
B 11 111 4983 86.47 286 281 54.4
C 14 238 43876 675.73 274 277 64.5
C 0 207 7795 116.52 274 277 64.5
C 13 61 1896 25.09 274 277 64.5
D 7 238 1505563 23689.91 258 249 63.5
D 1 52 186860 2936.79 258 249 63.5
D 15 0 10076 154.64 258 249 63.5

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