ASTROSAT CZTI

Data Quality Report

Orbit 38714

Creation date: 2024-06-27T21:55:29.190692
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/AS1A12_054T01_9000005392_38714cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38714cztM0_level2_quad_clean.evt
Size (bytes)496,537,92072,420,480
Size473.5 MB 69.1 MB
Events in quadrant A2,793,269552,643
Events in quadrant B2,264,133565,373
Events in quadrant C2,341,228534,594
Events in quadrant D10,595,042191,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112471
B0100431
C099661
D0348691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4957631.270930%
B495750.100867%
C495740.080694%
D4957350470.687916%

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 4957 4957 41 41 0.83% 0.83%
B 4957 4957 1 1 0.02% 0.02%
C 4957 4957 2 2 0.04% 0.04%
D 4957 4957 3095 3095 62.44% 62.44%

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 301312 2647.4 555 543 113.6
A 13 248 272434 2393.22 555 543 113.6
A 0 8 61217 534.06 555 543 113.6
B 4 171 38037 350.58 552 538 107.0
B 0 230 13919 125.1 552 538 107.0
B 12 111 13903 124.95 552 538 107.0
C 15 214 200934 1569.59 542 546 127.7
C 3 110 13479 101.3 542 546 127.7
C 0 10 6775 48.79 542 546 127.7
D 2 16 5315632 51001.55 421 409 104.2
D 2 249 1646760 15797.35 421 409 104.2
D 12 235 1608575 15430.95 421 409 104.2

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