ASTROSAT CZTI

Data Quality Report

Orbit 48256

Creation date: 2024-09-05T19:56:30.177160
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/AS1A13_029T01_9000006422_48256cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48256cztM0_level2_quad_clean.evt
Size (bytes)741,781,440172,319,040
Size707.4 MB 164.3 MB
Events in quadrant A11,004,7111,133,460
Events in quadrant B5,456,0541,175,923
Events in quadrant C4,664,9231,138,667
Events in quadrant D5,513,5221,036,191

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410332
B0232052
C0215343
D0236262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105813773.562990%
B105822001.890002%
C10581770.727719%
D105811581.493243%

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 12636 10581 82 82 0.65% 0.77%
B 12637 10582 48 48 0.38% 0.45%
C 12636 10581 0 0 0.00% 0.00%
D 12636 10581 46 46 0.36% 0.43%

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 10 83 6164725 24825.55 1196 1167 248.3
A 13 248 141436 564.97 1196 1167 248.3
A 3 14 50891 200.28 1196 1167 248.3
B 4 21 225477 953.72 1197 1156 235.2
B 5 255 188521 796.6 1197 1156 235.2
B 0 200 96956 407.3 1197 1156 235.2
C 12 249 15821 52.68 1183 1188 277.8
C 12 2 14888 49.32 1183 1188 277.8
C 3 233 14575 48.19 1183 1188 277.8
D 12 1 350137 1178.15 1189 1154 296.2
D 2 120 192314 645.35 1189 1154 296.2
D 2 249 109275 365.01 1189 1154 296.2

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