ASTROSAT CZTI

Data Quality Report

Orbit 32126

Creation date: 2024-06-27T20:36:46.935951
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/AS1T04_051T01_9000004686_32126cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32126cztM0_level2_quad_clean.evt
Size (bytes)681,410,88097,329,600
Size649.8 MB 92.8 MB
Events in quadrant A3,285,326643,509
Events in quadrant B7,868,589588,785
Events in quadrant C3,558,836629,183
Events in quadrant D5,457,032604,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141561
B0283521
C0149311
D0211561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6916380.549451%
B6917105715.281191%
C69171452.096285%
D69171452.096285%

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 7236 6917 0 0 0.00% 0.00%
B 7237 6918 801 801 11.07% 11.58%
C 7237 6918 14 14 0.19% 0.20%
D 7237 6918 128 128 1.77% 1.85%

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 6 17504 97.18 846 828 171.6
A 13 254 13464 73.64 846 828 171.6
A 3 137 8643 45.54 846 828 171.6
B 10 245 2416691 15734.75 796 775 153.5
B 6 159 1861977 12121.92 796 775 153.5
B 5 172 231477 1502.55 796 775 153.5
C 0 10 221568 1167.67 803 810 189.1
C 14 238 131517 691.36 803 810 189.1
C 3 233 25710 131.7 803 810 189.1
D 8 195 1687828 8659.6 812 790 194.8
D 12 233 381837 1955.92 812 790 194.8
D 7 38 158762 810.87 812 790 194.8

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