ASTROSAT CZTI

Data Quality Report

Orbit 37827

Creation date: 2024-06-27T21:44:59.221792
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/AS1T05_054T01_9000005350_37827cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37827cztM0_level2_quad_clean.evt
Size (bytes)156,024,00038,376,000
Size148.8 MB 36.6 MB
Events in quadrant A1,064,291260,848
Events in quadrant B1,145,535260,379
Events in quadrant C1,093,141256,059
Events in quadrant D1,288,928244,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043431
B046731
C044841
D050881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1929130.673924%
B1929261.347849%
C1929251.296008%
D1930763.937824%

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 1929 1929 8 8 0.41% 0.41%
B 1928 1928 16 16 0.83% 0.83%
C 1929 1929 26 26 1.35% 1.35%
D 1929 1929 84 84 4.35% 4.35%

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 161746 3505.07 222 218 46.1
A 9 143 23114 496.83 222 218 46.1
A 13 6 14737 315.05 222 218 46.1
B 4 232 90851 2085.68 217 212 43.5
B 5 172 66539 1526.24 217 212 43.5
B 0 213 56288 1290.36 217 212 43.5
C 0 10 91036 1817.06 206 208 50.0
C 15 214 84437 1685.05 206 208 50.0
C 15 159 76758 1531.43 206 208 50.0
D 2 249 196922 3755.95 208 202 52.4
D 12 233 68362 1301.37 208 202 52.4
D 10 199 54111 1029.28 208 202 52.4

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