ASTROSAT CZTI

Data Quality Report

Orbit 48176

Creation date: 2024-08-26T13:56:03.526568
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/AS1C09_004T05_9000006408_48176cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48176cztM0_level2_quad_clean.evt
Size (bytes)598,233,600109,431,360
Size570.5 MB 104.4 MB
Events in quadrant A9,515,174948,329
Events in quadrant B1,564,006119
Events in quadrant C4,065,604934,405
Events in quadrant D6,296,460809,443

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341570
B096120
C0189150
D0249441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89382672.987245%
B8939893799.977626%
C8939550.615281%
D89386997.820542%

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 8938 8938 20 20 0.22% 0.22%
B 8938 8938 1 1 0.01% 0.01%
C 8939 8939 26 26 0.29% 0.29%
D 8938 8938 442 442 4.95% 4.95%

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 5512908 27018.36 981 958 204.0
A 13 248 136582 664.8 981 958 204.0
A 7 3 47253 226.93 981 958 204.0
B 2 177 1230077 78077.57 67 65 15.8
B 4 21 24627 1559.12 67 65 15.8
B 0 186 14473 914.58 67 65 15.8
C 12 2 196109 844.26 982 987 231.1
C 0 207 11016 43.39 982 987 231.1
C 11 16 10761 42.29 982 987 231.1
D 2 165 2077855 8788.48 945 915 236.3
D 12 1 124758 524.04 945 915 236.3
D 12 2 82015 343.17 945 915 236.3

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