ASTROSAT CZTI

Data Quality Report

Orbit 49845

Creation date: 2024-12-16T09:43:02.811167
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_037T01_9000006440_49845cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49845cztM0_level2_quad_clean.evt
Size (bytes)1,289,560,32055,186,560
Size1.2 GB 52.6 MB
Events in quadrant A15,932,533320,331
Events in quadrant B3,944,114713,010
Events in quadrant C12,617,47940,420
Events in quadrant D14,696,07397,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521120
B0165900
C0423830
D0484500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7042542377.009372%
B70431081.533437%
C70437043100.000000%
D70437043100.000000%

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 7041 7041 5110 5110 72.57% 72.57%
B 7043 7043 75 75 1.06% 1.06%
C 7042 7042 2099 2099 29.81% 29.81%
D 7042 7042 4535 4535 64.40% 64.40%

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 0 98 10222373 96471.53 379 368 106.0
A 3 84 857664 8090.84 379 368 106.0
A 3 130 628545 5928.5 379 368 106.0
B 0 229 402948 2540.09 743 719 158.4
B 4 206 256065 1612.52 743 719 158.4
B 10 44 72591 453.87 743 719 158.4
C 15 236 2091730 59679.12 63 60 35.0
C 15 174 1713387 48884.31 63 60 35.0
C 15 197 1401565 39987.47 63 60 35.0
D 8 129 4522256 67539.2 139 130 67.0
D 7 61 2137571 31923.27 139 130 67.0
D 7 126 1034302 15445.64 139 130 67.0

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