ASTROSAT CZTI

Data Quality Report

Orbit 34600

Creation date: 2022-02-20T23:20:05.342080
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_014T01_9000004950_34600cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34600cztM0_level2_quad_clean.evt
Size (bytes)609,056,64074,093,760
Size580.8 MB 70.7 MB
Events in quadrant A3,434,016482,918
Events in quadrant B3,901,423480,998
Events in quadrant C3,010,576480,904
Events in quadrant D7,716,589402,424

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138212
B0151121
C0121201
D0269801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56651793.159753%
B56653736.584289%
C5665290.511915%
D566596717.069726%

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 7125 5666 113 113 1.59% 1.99%
B 7125 5666 265 265 3.72% 4.68%
C 7125 5666 20 20 0.28% 0.35%
D 7125 5666 925 925 12.98% 16.33%

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 15 169 799197 5867.79 667 654 136.1
A 10 83 33325 240.07 667 654 136.1
A 13 6 13330 93.14 667 654 136.1
B 5 172 916836 7217.18 655 640 126.9
B 5 255 128588 1007.89 655 640 126.9
B 0 218 67698 528.24 655 640 126.9
C 15 214 233947 1521.22 656 663 153.4
C 5 80 63210 407.86 656 663 153.4
C 0 10 62852 405.53 656 663 153.4
D 8 195 2848348 17260.18 612 601 165.0
D 14 52 995392 6029.42 612 601 165.0
D 13 249 470434 2847.66 612 601 165.0

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