ASTROSAT CZTI

Data Quality Report

Orbit 45877

Creation date: 2024-06-27T23:17:12.264680
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/AS1C07_001T01_9000006136_45877cztM0_level2.fits modeM0/AS1C07_001T01_9000006136_45877cztM0_level2_quad_clean.evt
Size (bytes)553,726,080103,760,640
Size528.1 MB 99.0 MB
Events in quadrant A5,890,292693,598
Events in quadrant B7,215,374609,332
Events in quadrant C2,844,659728,874
Events in quadrant D4,037,137651,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223062
B0259662
C0133952
D0168552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65732533.849080%
B6572137420.906878%
C6572260.395618%
D65721722.617164%

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 7593 6574 98 98 1.29% 1.49%
B 7592 6573 855 855 11.26% 13.01%
C 7592 6573 1 1 0.01% 0.02%
D 7592 6573 113 113 1.49% 1.72%

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 2951824 20062.23 706 690 147.1
A 0 247 157288 1064.58 706 690 147.1
A 2 79 14748 95.57 706 690 147.1
B 3 112 4430401 34570.42 659 639 128.1
B 4 171 105144 815.57 659 639 128.1
B 4 158 18189 136.96 659 639 128.1
C 12 2 9439 52.16 720 723 167.1
C 15 208 8323 45.48 720 723 167.1
C 12 249 5878 30.85 720 723 167.1
D 1 52 727478 4106.09 705 685 177.0
D 13 249 129483 727.66 705 685 177.0
D 2 249 124816 701.29 705 685 177.0

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