ASTROSAT CZTI

Data Quality Report

Orbit 28404

Creation date: 2024-06-27T19:51:25.070510
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/AS1A10_058T13_9000004088_28404cztM0_level2.evt modeM0/AS1A10_058T13_9000004088_28404cztM0_level2_quad_clean.evt
Size (bytes)618,552,00086,189,760
Size589.9 MB 82.2 MB
Events in quadrant A3,885,917528,314
Events in quadrant B4,151,457537,989
Events in quadrant C3,909,563514,821
Events in quadrant D6,258,266487,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166070
B0171360
C0165560
D0237190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114068076535684046
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77782963.805606%
B77783764.834148%
C77773654.693326%
D77777139.168060%

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 7778 7778 1 1 0.01% 0.01%
B 7778 7778 11 11 0.14% 0.14%
C 7777 7777 0 0 0.00% 0.00%
D 7777 7777 397 397 5.10% 5.10%

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 6 16 17886 83.09 999 976 203.5
A 15 47 12878 58.48 999 976 203.5
A 13 254 12052 54.42 999 976 203.5
B 10 245 181082 919.47 992 965 195.9
B 10 246 43313 216.18 992 965 195.9
B 12 111 25143 123.43 992 965 195.9
C 14 238 150990 652.08 961 969 230.1
C 7 220 10768 42.59 961 969 230.1
C 13 61 6466 23.89 961 969 230.1
D 1 52 1638298 7155.42 943 917 228.8
D 8 195 737736 3219.93 943 917 228.8
D 7 80 143616 623.6 943 917 228.8

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