ASTROSAT CZTI

Data Quality Report

Orbit 35369

Creation date: 2024-06-27T21:12:36.884964
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/AS1A11_099T01_9000005068_35369cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35369cztM0_level2_quad_clean.evt
Size (bytes)793,679,04066,542,400
Size756.9 MB 63.5 MB
Events in quadrant A2,845,193470,061
Events in quadrant B11,843,042254,050
Events in quadrant C3,385,695454,714
Events in quadrant D5,559,962417,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123143
B0392798
C0136402
D0205112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596060.100671%
B5959402467.528109%
C59601111.862416%
D59604928.255034%

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 7273 5961 0 0 0.00% 0.00%
B 7273 5961 3458 3458 47.55% 58.01%
C 7273 5961 80 80 1.10% 1.34%
D 7273 5961 524 524 7.20% 8.79%

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 10 83 128710 912.63 692 678 140.3
A 13 6 19985 137.62 692 678 140.3
A 13 254 10846 72.48 692 678 140.3
B 4 251 9672174 115091.07 432 422 84.0
B 5 172 178255 2116.16 432 422 84.0
B 5 236 129304 1533.66 432 422 84.0
C 0 10 399020 2565.77 667 672 155.3
C 15 214 244360 1569.6 667 672 155.3
C 3 233 80717 515.57 667 672 155.3
D 8 195 921235 5677.43 656 637 162.2
D 1 52 443005 2728.13 656 637 162.2
D 13 249 347118 2136.79 656 637 162.2

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