ASTROSAT CZTI

Data Quality Report

Orbit 06688

Creation date: 2024-06-27T15:10:24.825535
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/AS1T01_145T01_9000000916_06688cztM0_level2.evt modeM0/AS1T01_145T01_9000000916_06688cztM0_level2_quad_clean.evt
Size (bytes)96,356,16020,073,600
Size91.9 MB 19.1 MB
Events in quadrant A478,926136,676
Events in quadrant B524,443139,018
Events in quadrant C461,165133,811
Events in quadrant D1,373,751111,710

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022761
B023310
C022600
D048710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112820.177305%
B112820.177305%
C112800.000000%
D112815814.007092%

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 1128 1128 1 1 0.09% 0.09%
B 1128 1128 1 1 0.09% 0.09%
C 1128 1128 0 0 0.00% 0.00%
D 1128 1128 134 134 11.88% 11.88%

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 13561 501.45 120 117 26.8
A 4 2 1265 42.82 120 117 26.8
A 12 194 1190 40.02 120 117 26.8
B 4 173 10912 420.61 124 121 25.7
B 4 172 10679 411.52 124 121 25.7
B 15 204 4951 188.26 124 121 25.7
C 9 54 2736 90.49 117 117 28.9
C 13 61 969 29.44 117 117 28.9
C 7 247 295 6.15 117 117 28.9
D 8 195 504073 18854.55 103 99 26.7
D 2 33 396445 14828.0 103 99 26.7
D 2 152 70161 2621.14 103 99 26.7

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