ASTROSAT CZTI

Data Quality Report

Orbit 48455

Creation date: 2024-09-13T03:17:20.336302
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_029T01_9000006426_48455cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48455cztM0_level2_quad_clean.evt
Size (bytes)597,769,920122,601,600
Size570.1 MB 116.9 MB
Events in quadrant A8,249,064796,135
Events in quadrant B4,161,744837,713
Events in quadrant C3,495,077818,616
Events in quadrant D5,617,159716,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301901
B0180192
C0162801
D0223561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77994746.077702%
B77992643.385049%
C7799270.346198%
D77994916.295679%

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 7814 7800 57 57 0.73% 0.73%
B 7814 7800 83 83 1.06% 1.06%
C 7814 7800 0 0 0.00% 0.00%
D 7814 7800 367 367 4.70% 4.71%

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 4597855 24615.57 887 864 186.8
A 13 248 215842 1151.14 887 864 186.8
A 13 254 14472 72.86 887 864 186.8
B 12 16 446503 2488.82 885 855 179.1
B 5 255 184906 1027.87 885 855 179.1
B 12 111 22699 121.99 885 855 179.1
C 15 208 41684 194.54 881 888 209.7
C 14 67 10751 47.03 881 888 209.7
C 3 233 7637 32.18 881 888 209.7
D 2 249 828277 3781.02 864 833 218.8
D 5 222 485902 2216.53 864 833 218.8
D 12 233 323417 1474.05 864 833 218.8

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