ASTROSAT CZTI

Data Quality Report

Orbit 18724

Creation date: 2024-06-27T17:53:59.118532
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/AS1T03_091T01_9000002798_18724cztM0_level2.evt modeM0/AS1T03_091T01_9000002798_18724cztM0_level2_quad_clean.evt
Size (bytes)105,520,32020,914,560
Size100.6 MB 19.9 MB
Events in quadrant A553,903142,563
Events in quadrant B1,173,884135,273
Events in quadrant C846,330134,474
Events in quadrant D543,860136,412

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023211
B042171
C033581
D023821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1102282.540835%
B110225823.411978%
C1102787.078040%
D1102262.359347%

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 1797 1103 0 0 0.00% 0.00%
B 1797 1103 139 139 7.74% 12.60%
C 1797 1103 1 1 0.06% 0.09%
D 1797 1103 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 9 143 2529 78.31 142 139 30.5
A 15 192 2239 68.8 142 139 30.5
A 13 254 1799 54.39 142 139 30.5
B 10 245 638979 22016.29 135 132 29.0
B 12 111 3302 109.25 135 132 29.0
B 0 182 2769 90.88 135 132 29.0
C 3 233 308017 9243.06 132 132 33.3
C 14 238 19430 579.35 132 132 33.3
C 8 128 1434 39.09 132 132 33.3
D 14 34 20097 568.05 136 131 35.1
D 2 234 4743 131.22 136 131 35.1
D 10 70 4018 110.59 136 131 35.1

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