ASTROSAT CZTI

Data Quality Report

Orbit 01061

Creation date: 2024-06-27T14:06:52.192491
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/AS1P01_998T02_9000000190_01061cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01061cztM0_level2_quad_clean.evt
Size (bytes)1,141,416,000120,965,760
Size1.1 GB 115.4 MB
Events in quadrant A8,394,437803,926
Events in quadrant B8,881,686806,234
Events in quadrant C8,892,144779,778
Events in quadrant D7,921,880772,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300492
B0314971
C0315241
D0287191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A720670.097141%
B7206220.305301%
C7206220.305301%
D7206190.263669%

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 7371 7209 245 245 3.32% 3.40%
B 7371 7209 340 340 4.61% 4.72%
C 7371 7209 372 372 5.05% 5.16%
D 7371 7209 211 211 2.86% 2.93%

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 11 79 8686 12.39 2186 2193 524.0
A 3 111 6475 8.17 2186 2193 524.0
A 14 203 5817 6.91 2186 2193 524.0
B 5 249 56583 100.94 2291 2294 537.8
B 15 22 47401 83.86 2291 2294 537.8
B 12 52 19137 31.31 2291 2294 537.8
C 15 241 378597 636.72 2115 2194 591.2
C 9 52 159740 266.5 2115 2194 591.2
C 3 79 45754 73.69 2115 2194 591.2
D 13 13 95369 147.42 2051 2125 632.5
D 2 170 71772 110.12 2051 2125 632.5
D 2 216 44179 66.49 2051 2125 632.5

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