ASTROSAT CZTI

Data Quality Report

Orbit 25287

Creation date: 2024-06-27T19:15:57.382521
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_022T01_9000003702_25287cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25287cztM0_level2_quad_clean.evt
Size (bytes)545,993,280131,716,800
Size520.7 MB 125.6 MB
Events in quadrant A3,589,104913,768
Events in quadrant B3,676,407911,892
Events in quadrant C3,637,116867,512
Events in quadrant D5,195,134845,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148800
B0150960
C0148500
D0201910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64561322.044610%
B64561522.354399%
C64561752.710657%
D64561953.020446%

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 7766 6457 0 0 0.00% 0.00%
B 7766 6457 3 3 0.04% 0.05%
C 7766 6456 5 5 0.06% 0.08%
D 7766 6457 80 80 1.03% 1.24%

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 13 254 10473 52.4 927 912 182.5
A 0 226 8231 40.11 927 912 182.5
A 3 137 7298 35.0 927 912 182.5
B 3 112 79517 479.21 901 883 164.1
B 3 64 37528 223.32 901 883 164.1
B 12 111 18502 107.37 901 883 164.1
C 14 238 143739 709.49 878 886 201.3
C 0 239 51411 250.94 878 886 201.3
C 7 247 10187 46.19 878 886 201.3
D 1 52 1370542 6413.37 898 876 213.6
D 8 195 341051 1592.85 898 876 213.6
D 12 233 39752 182.03 898 876 213.6

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