ASTROSAT CZTI

Data Quality Report

Orbit 06510

Creation date: 2024-06-27T15:08:09.772621
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/AS1A02_175T01_9000000874_06510cztM0_level2.evt modeM0/AS1A02_175T01_9000000874_06510cztM0_level2_quad_clean.evt
Size (bytes)144,797,76032,670,720
Size138.1 MB 31.2 MB
Events in quadrant A1,064,066213,693
Events in quadrant B888,251222,638
Events in quadrant C835,920215,175
Events in quadrant D1,466,864200,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044351
B039411
C038981
D056841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1876764.051173%
B1876211.119403%
C1876130.692964%
D1876673.571429%

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 2856 1877 5 5 0.18% 0.27%
B 2856 1877 0 0 0.00% 0.00%
C 2856 1877 0 0 0.00% 0.00%
D 2856 1877 49 49 1.72% 2.61%

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 8 15 121300 2601.85 219 214 46.5
A 15 236 97373 2087.71 219 214 46.5
A 0 226 2065 39.77 219 214 46.5
B 4 80 6368 137.49 225 220 44.7
B 4 81 5579 119.84 225 220 44.7
B 12 111 4814 102.74 225 220 44.7
C 4 254 3108 56.06 212 214 51.6
C 1 16 1870 32.08 212 214 51.6
C 13 61 1640 27.62 212 214 51.6
D 2 152 609667 11613.47 206 199 52.5
D 2 14 23708 447.97 206 199 52.5
D 5 97 21279 401.68 206 199 52.5

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