ASTROSAT CZTI

Data Quality Report

Orbit 40159

Creation date: 2024-06-27T22:13:03.407424
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/AS1A12_068T02_9000005524_40159cztM0_level2.fits modeM0/AS1A12_068T02_9000005524_40159cztM0_level2_quad_clean.evt
Size (bytes)1,327,308,480155,859,840
Size1.2 GB 148.6 MB
Events in quadrant A6,109,4201,315,971
Events in quadrant B5,703,3311,372,439
Events in quadrant C30,467,81717,617
Events in quadrant D5,925,8771,187,709

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0631
B0642
C0632
D0631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026923
B026816
C026826
D026822

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281052573
B0277422514
C011199513323
D0292972571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12038190.157834%
B12018640.532535%
C116401150698.848797%
D120321821.512633%

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 19385 12244 5 5 0.03% 0.04%
B 19386 12254 35 35 0.18% 0.29%
C 19385 11639 11453 11453 59.08% 98.40%
D 19386 12252 176 176 0.91% 1.44%

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 809098 3018.56 1322 1298 267.6
A 6 10 84765 311.9 1322 1298 267.6
A 2 79 75475 277.18 1322 1298 267.6
B 4 171 225706 889.25 1315 1279 252.4
B 5 172 189702 746.59 1315 1279 252.4
B 0 190 81912 319.49 1315 1279 252.4
C 9 187 28597004 308165.8 403 406 92.8
C 15 214 165535 1779.48 403 406 92.8
C 9 203 47396 506.38 403 406 92.8
D 12 227 590206 1906.21 1276 1240 309.0
D 13 249 138885 445.49 1276 1240 309.0
D 1 47 90416 288.62 1276 1240 309.0

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