ASTROSAT CZTI

Data Quality Report

Orbit 13238

Creation date: 2024-06-27T16:38:14.371565
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/AS1G08_077T01_9000001970_13238cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13238cztM0_level2_quad_clean.evt
Size (bytes)929,056,320141,059,520
Size886.0 MB 134.5 MB
Events in quadrant A5,197,999918,749
Events in quadrant B10,738,675827,305
Events in quadrant C4,660,082928,591
Events in quadrant D6,833,316873,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224693
B0389432
C0211972
D0270462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104411721.647352%
B10441258424.748587%
C10441850.814098%
D104417206.895891%

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 12017 10444 39 39 0.32% 0.37%
B 12017 10442 1849 1849 15.39% 17.71%
C 12017 10444 2 2 0.02% 0.02%
D 12017 10444 592 592 4.93% 5.67%

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 12 189 370595 1511.6 1207 1179 244.4
A 15 239 89274 360.47 1207 1179 244.4
A 15 69 60687 243.5 1207 1179 244.4
B 4 239 6465267 32476.49 1042 1014 199.0
B 3 64 64003 316.46 1042 1014 199.0
B 4 142 41137 201.58 1042 1014 199.0
C 15 208 29962 105.06 1185 1187 273.9
C 13 61 8689 27.39 1185 1187 273.9
C 8 222 5732 16.59 1185 1187 273.9
D 1 52 1353634 4878.64 1155 1120 277.2
D 10 157 668224 2406.3 1155 1120 277.2
D 5 222 258437 928.17 1155 1120 277.2

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