ASTROSAT CZTI

Data Quality Report

Orbit 00574

Creation date: 2024-06-27T13:59:55.112726
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_014T01_9000000080_00574cztM0_level2.evt modeM0/AS1P01_014T01_9000000080_00574cztM0_level2_quad_clean.evt
Size (bytes)781,914,24070,200,000
Size745.7 MB 66.9 MB
Events in quadrant A6,285,360434,636
Events in quadrant B5,764,551448,584
Events in quadrant C5,566,249451,294
Events in quadrant D5,727,772436,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222933
B0207672
C0201372
D0206112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50482064.080824%
B504820.039620%
C504840.079239%
D5048340.673534%

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 7204 5049 351 351 4.87% 6.95%
B 7204 5049 54 54 0.75% 1.07%
C 7204 5049 47 47 0.65% 0.93%
D 7204 5049 207 207 2.87% 4.10%

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 13 17 639420 1985.25 1441 1422 321.4
A 12 133 29903 88.62 1441 1422 321.4
A 0 238 26927 79.36 1441 1422 321.4
B 0 220 20708 55.05 1489 1498 349.0
B 15 185 16178 42.07 1489 1498 349.0
B 8 4 13295 33.8 1489 1498 349.0
C 9 85 161695 421.65 1357 1405 380.2
C 5 249 33440 84.27 1357 1405 380.2
C 15 241 13651 32.21 1357 1405 380.2
D 13 221 330271 825.31 1274 1320 398.6
D 1 4 195290 486.66 1274 1320 398.6
D 12 22 157255 391.23 1274 1320 398.6

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