ASTROSAT CZTI

Data Quality Report

Orbit 36742

Creation date: 2024-06-27T21:31:04.324504
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_101T01_9000005238_36742cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36742cztM0_level2_quad_clean.evt
Size (bytes)1,361,525,760217,782,720
Size1.3 GB 207.7 MB
Events in quadrant A8,777,4001,359,230
Events in quadrant B9,353,6151,401,659
Events in quadrant C11,144,2061,322,269
Events in quadrant D10,750,7561,279,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371746
B0391825
C0441165
D0439205

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17895160.089410%
B178953151.760268%
C178955513.079072%
D178955102.849958%

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 32496 17899 1 1 0.00% 0.01%
B 32496 17899 93 93 0.29% 0.52%
C 32496 17899 473 473 1.46% 2.64%
D 32496 17899 432 432 1.33% 2.41%

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 632359 1524.65 2088 2051 413.4
A 9 143 46358 107.17 2088 2051 413.4
A 13 254 29603 66.65 2088 2051 413.4
B 5 200 497422 1284.76 2066 2017 385.6
B 0 213 193197 495.8 2066 2017 385.6
B 5 255 160000 409.71 2066 2017 385.6
C 14 254 1307923 2850.86 1988 2005 458.1
C 0 10 1231797 2684.68 1988 2005 458.1
C 15 214 737311 1605.2 1988 2005 458.1
D 12 227 905972 1890.71 1994 1948 478.1
D 13 171 497395 1036.2 1994 1948 478.1
D 13 249 404687 842.3 1994 1948 478.1

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