ASTROSAT CZTI

Data Quality Report

Orbit 46941

Creation date: 2024-06-27T23:29:43.459145
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/AS1A13_077T01_9000006286_46941cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46941cztM0_level2_quad_clean.evt
Size (bytes)655,421,76093,418,560
Size625.1 MB 89.1 MB
Events in quadrant A6,340,902660,593
Events in quadrant B9,714,294491,588
Events in quadrant C3,434,061648,472
Events in quadrant D4,287,901590,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230614
B0332351
C0147901
D0170561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62591983.163445%
B6260217934.808307%
C62601883.003195%
D62612754.392270%

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 7175 6260 51 51 0.71% 0.81%
B 7175 6260 1884 1884 26.26% 30.10%
C 7175 6261 195 195 2.72% 3.11%
D 7176 6261 241 241 3.36% 3.85%

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 3560312 24644.0 688 672 144.4
A 7 3 49819 340.25 688 672 144.4
A 0 243 17761 118.31 688 672 144.4
B 3 112 6879666 55646.83 624 606 123.6
B 15 36 86044 691.13 624 606 123.6
B 0 190 77945 625.61 624 606 123.6
C 12 2 620584 3872.17 672 676 160.1
C 14 254 148064 920.64 672 676 160.1
C 1 241 21625 130.85 672 676 160.1
D 1 52 686772 3986.4 669 647 172.1
D 13 249 660574 3834.19 669 647 172.1
D 10 181 62843 361.36 669 647 172.1

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