ASTROSAT CZTI

Data Quality Report

Orbit 43918

Creation date: 2024-06-27T22:57:10.935411
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_009T02_9000005914_43918cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43918cztM0_level2_quad_clean.evt
Size (bytes)757,310,400126,368,640
Size722.2 MB 120.5 MB
Events in quadrant A12,037,442640,494
Events in quadrant B4,738,019927,126
Events in quadrant C3,952,225895,728
Events in quadrant D6,646,268771,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418322
B0198552
C0176492
D0257852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8502285833.615620%
B85022362.775817%
C8503650.764436%
D85026627.786403%

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 10022 8504 2478 2478 24.73% 29.14%
B 10022 8504 69 69 0.69% 0.81%
C 10023 8505 9 9 0.09% 0.11%
D 10022 8504 531 531 5.30% 6.24%

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 15 222 3900091 22862.12 818 802 170.6
A 15 223 2883229 16900.1 818 802 170.6
A 10 83 1241316 7273.32 818 802 170.6
B 5 235 503791 2651.91 954 923 189.6
B 5 172 180395 946.46 954 923 189.6
B 0 183 94636 494.2 954 923 189.6
C 3 233 73758 328.74 943 948 221.5
C 10 22 54448 241.55 943 948 221.5
C 14 254 46290 204.72 943 948 221.5
D 1 52 1486815 6532.12 911 883 227.5
D 5 235 358560 1572.34 911 883 227.5
D 12 233 357426 1567.35 911 883 227.5

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