ASTROSAT CZTI

Data Quality Report

Orbit 00556

Creation date: 2024-06-27T13:59:43.719876
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/AS1P01_015T03_9000000076_00556cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00556cztM0_level2_quad_clean.evt
Size (bytes)747,023,04064,408,320
Size712.4 MB 61.4 MB
Events in quadrant A5,029,399414,191
Events in quadrant B5,062,620413,645
Events in quadrant C5,084,109414,186
Events in quadrant D7,154,238397,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180932
B0181931
C0182611
D0243161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A440820.045372%
B440870.158802%
C440880.181488%
D4408791.792196%

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 6564 4409 62 62 0.94% 1.41%
B 6564 4409 57 57 0.87% 1.29%
C 6564 4409 73 73 1.11% 1.66%
D 6564 4409 751 751 11.44% 17.03%

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 0 238 64141 221.06 1273 1256 284.5
A 13 160 17060 55.56 1273 1256 284.5
A 14 79 15321 49.44 1273 1256 284.5
B 8 4 65028 211.82 1285 1287 300.9
B 5 46 32176 102.65 1285 1287 300.9
B 4 206 17675 54.46 1285 1287 300.9
C 1 1 187683 552.8 1204 1247 337.3
C 3 159 137361 403.59 1204 1247 337.3
C 15 241 11274 29.73 1204 1247 337.3
D 1 239 1684243 4739.78 1141 1190 355.1
D 2 33 343158 963.04 1141 1190 355.1
D 1 4 253091 709.4 1141 1190 355.1

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