ASTROSAT CZTI

Data Quality Report

Orbit 43768

Creation date: 2024-06-27T22:55:33.512049
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_026T01_9000005904_43768cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43768cztM0_level2_quad_clean.evt
Size (bytes)766,221,120113,472,000
Size730.7 MB 108.2 MB
Events in quadrant A7,117,970776,573
Events in quadrant B4,923,669831,487
Events in quadrant C6,151,538788,621
Events in quadrant D9,588,672515,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266260
B0196672
C0234740
D0336500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75136208.252363%
B75122703.594249%
C75125156.855698%
D7512237731.642705%

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 7513 7513 387 387 5.15% 5.15%
B 7512 7512 142 142 1.89% 1.89%
C 7512 7512 480 480 6.39% 6.39%
D 7512 7512 1966 1966 26.17% 26.17%

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 14 63 1983403 11376.68 834 817 174.3
A 10 83 1034776 5933.17 834 817 174.3
A 15 223 524820 3006.89 834 817 174.3
B 0 200 506307 3052.97 846 821 165.6
B 5 235 340539 2051.79 846 821 165.6
B 0 213 144593 868.34 846 821 165.6
C 15 158 2274944 11885.3 814 820 191.3
C 3 233 426728 2225.93 814 820 191.3
C 14 254 117721 610.96 814 820 191.3
D 5 235 4756092 26083.73 701 676 182.3
D 1 52 366083 2004.28 701 676 182.3
D 13 249 348206 1906.22 701 676 182.3

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