ASTROSAT CZTI

Data Quality Report

Orbit 25720

Creation date: 2024-06-27T19:20:45.939877
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/AS1A09_008T06_9000003748_25720cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25720cztM0_level2_quad_clean.evt
Size (bytes)472,343,04082,123,200
Size450.5 MB 78.3 MB
Events in quadrant A3,240,888524,415
Events in quadrant B3,325,618535,277
Events in quadrant C3,342,974513,753
Events in quadrant D3,996,573502,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135600
B0137970
C0138590
D0158740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5877591.003914%
B5878751.275944%
C58781182.007486%
D58781642.790065%

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 7187 5877 1 1 0.01% 0.02%
B 7188 5878 4 4 0.06% 0.07%
C 7188 5878 0 0 0.00% 0.00%
D 7188 5878 102 102 1.42% 1.74%

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 0 13 39664 236.21 830 819 164.4
A 13 254 9997 55.81 830 819 164.4
A 0 226 7329 39.59 830 819 164.4
B 5 172 28987 183.34 830 813 153.7
B 0 190 23014 144.47 830 813 153.7
B 12 111 17074 105.82 830 813 153.7
C 14 238 130439 693.71 810 819 186.8
C 3 233 39585 207.47 810 819 186.8
C 1 16 9485 46.38 810 819 186.8
D 1 52 591760 3008.45 816 796 196.4
D 2 244 107227 541.81 816 796 196.4
D 8 195 91890 463.74 816 796 196.4

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