ASTROSAT CZTI

Data Quality Report

Orbit 30594

Creation date: 2024-06-27T20:17:25.642321
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_058T03_9000004408_30594cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30594cztM0_level2_quad_clean.evt
Size (bytes)1,655,202,240241,142,400
Size1.5 GB 230.0 MB
Events in quadrant A8,981,5521,589,369
Events in quadrant B14,941,7001,580,104
Events in quadrant C10,680,7391,370,488
Events in quadrant D14,249,7861,460,360

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388565
B0580035
C0440275
D0556335

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188911560.825790%
B188913721.969192%
C18892303416.059708%
D188925282.794834%

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 20916 18896 2 2 0.01% 0.01%
B 20916 18896 29 29 0.14% 0.15%
C 20917 18896 35 35 0.17% 0.19%
D 20917 18897 328 328 1.57% 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 8 192 47259 96.87 2316 2268 464.5
A 13 254 33710 67.69 2316 2268 464.5
A 3 137 24026 46.84 2316 2268 464.5
B 6 159 5415001 12388.96 2285 2226 436.9
B 0 229 292638 664.71 2285 2226 436.9
B 6 36 68042 150.64 2285 2226 436.9
C 14 238 1143407 2432.15 2017 2031 469.3
C 14 254 1033969 2198.95 2017 2031 469.3
C 0 10 289875 613.36 2017 2031 469.3
D 8 195 4015205 7647.88 2201 2140 524.7
D 13 249 939427 1786.23 2201 2140 524.7
D 5 222 212424 400.75 2201 2140 524.7

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