ASTROSAT CZTI

Data Quality Report

Orbit 27890

Creation date: 2024-06-27T19:45:38.660035
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_048T01_9000004028_27890cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27890cztM0_level2_quad_clean.evt
Size (bytes)555,598,08082,296,000
Size529.9 MB 78.5 MB
Events in quadrant A4,130,733514,682
Events in quadrant B3,669,188519,106
Events in quadrant C3,669,384492,228
Events in quadrant D4,889,066484,816

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168760
B0152360
C0153880
D0192740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69031211.752861%
B69041251.810545%
C69041772.563731%
D69042543.679027%

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 8998 6903 10 10 0.11% 0.14%
B 8999 6904 1 1 0.01% 0.01%
C 8999 6904 0 0 0.00% 0.00%
D 8999 6904 109 109 1.21% 1.58%

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 541700 2941.6 917 897 183.8
A 4 2 30407 160.51 917 897 183.8
A 9 130 17270 89.06 917 897 183.8
B 0 230 53997 306.29 913 890 173.4
B 10 245 36731 206.71 913 890 173.4
B 12 111 21056 116.3 913 890 173.4
C 14 238 140887 686.42 877 883 204.0
C 6 112 55667 268.6 877 883 204.0
C 3 233 45730 219.88 877 883 204.0
D 1 52 905632 4347.19 881 857 208.1
D 13 104 313468 1502.01 881 857 208.1
D 7 238 277127 1327.4 881 857 208.1

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