ASTROSAT CZTI

Data Quality Report

Orbit 43266

Creation date: 2024-06-27T22:49:56.513795
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/AS1A06_006T01_9000005860_43266cztM0_level2.fits modeM0/AS1A06_006T01_9000005860_43266cztM0_level2_quad_clean.evt
Size (bytes)886,152,960232,318,080
Size845.1 MB 221.6 MB
Events in quadrant A8,511,7601,518,852
Events in quadrant B6,352,1231,611,072
Events in quadrant C7,470,1941,522,631
Events in quadrant D9,328,7841,366,706

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345213
B0296613
C0317853
D0385223

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147003262.217687%
B14701250.170056%
C147011310.891096%
D147017585.156112%

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 20190 14704 250 250 1.24% 1.70%
B 20191 14705 4 4 0.02% 0.03%
C 20191 14705 126 126 0.62% 0.86%
D 20191 14704 667 667 3.30% 4.54%

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 1358311 4207.01 1568 1537 322.5
A 15 237 868475 2688.16 1568 1537 322.5
A 13 248 168676 518.26 1568 1537 322.5
B 5 255 72390 230.91 1582 1536 306.9
B 12 111 40023 125.42 1582 1536 306.9
B 11 111 37404 116.89 1582 1536 306.9
C 14 254 699025 1916.36 1555 1565 363.9
C 15 214 597513 1637.45 1555 1565 363.9
C 3 233 67158 180.23 1555 1565 363.9
D 2 249 837102 2256.76 1520 1477 370.3
D 13 249 821021 2213.33 1520 1477 370.3
D 1 47 664081 1789.48 1520 1477 370.3

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