ASTROSAT CZTI

Data Quality Report

Orbit 31886

Creation date: 2024-06-27T20:33:59.160102
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/AS1T04_043T01_9000004648_31886cztM0_level2.evt modeM0/AS1T04_043T01_9000004648_31886cztM0_level2_quad_clean.evt
Size (bytes)1,475,568,00080,732,160
Size1.4 GB 77.0 MB
Events in quadrant A8,756,137311,016
Events in quadrant B13,875,473309,443
Events in quadrant C9,416,117301,695
Events in quadrant D11,440,051293,903

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389642169
B0575502948
C0404431916
D0479102066

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261
B0250
C0250
D0261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038319
B038018
C038016
D038220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178111340.752344%
B177423311.865630%
C178323341.873037%
D178242931.643851%

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 21336 17978 7 7 0.03% 0.04%
B 21336 17876 26 26 0.12% 0.15%
C 21336 17975 10 10 0.05% 0.06%
D 21336 17973 172 172 0.81% 0.96%

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 56885 122.21 2239 2191 447.6
A 13 6 34872 73.02 2239 2191 447.6
A 15 174 32389 67.47 2239 2191 447.6
B 6 159 4713252 11161.6 2200 2148 422.1
B 10 245 374917 883.17 2200 2148 422.1
B 12 111 52939 120.33 2200 2148 422.1
C 3 233 491693 975.24 2136 2149 502.0
C 14 238 363941 720.74 2136 2149 502.0
C 0 10 122052 238.86 2136 2149 502.0
D 8 195 2327694 4531.02 2146 2091 513.3
D 12 218 430139 833.97 2146 2091 513.3
D 13 249 242112 467.64 2146 2091 513.3

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