ASTROSAT CZTI

Data Quality Report

Orbit 39136

Creation date: 2024-06-27T22:00:50.953804
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_044T16_9000005442_39136cztM0_level2.fits modeM0/AS1A12_044T16_9000005442_39136cztM0_level2_quad_clean.evt
Size (bytes)930,432,960129,176,640
Size887.3 MB 123.2 MB
Events in quadrant A4,464,342957,709
Events in quadrant B4,079,701971,222
Events in quadrant C10,796,403777,838
Events in quadrant D14,440,573610,586

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183173
B0177442
C0380032
D0487822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8550260.304094%
B8550660.771930%
C8550165019.298246%
D8550315736.923977%

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 11384 8551 14 14 0.12% 0.16%
B 11385 8552 42 42 0.37% 0.49%
C 11385 8552 1445 1445 12.69% 16.90%
D 11385 8552 2843 2843 24.97% 33.24%

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 550455 2748.18 986 967 199.9
A 9 143 39173 191.08 986 967 199.9
A 15 223 30017 145.29 986 967 199.9
B 5 172 137624 717.66 973 943 190.5
B 4 81 51036 263.02 973 943 190.5
B 0 213 25328 128.04 973 943 190.5
C 9 187 6916974 32692.62 905 912 211.5
C 15 214 331245 1561.5 905 912 211.5
C 2 16 7657 31.88 905 912 211.5
D 12 235 11054307 53923.68 852 829 205.0
D 2 249 41132 196.62 852 829 205.0
D 2 234 32338 153.71 852 829 205.0

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