ASTROSAT CZTI

Data Quality Report

Orbit 12973

Creation date: 2024-06-27T16:34:37.018472
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/AS1A04_112T01_9000001908_12973cztM0_level2.evt modeM0/AS1A04_112T01_9000001908_12973cztM0_level2_quad_clean.evt
Size (bytes)1,042,128,000202,343,040
Size993.9 MB 193.0 MB
Events in quadrant A7,366,0521,338,119
Events in quadrant B8,476,4011,272,428
Events in quadrant C7,279,1181,302,793
Events in quadrant D7,535,9271,291,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301983
B0339552
C0310222
D0313972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133522551.909826%
B1335212109.062313%
C133525654.231576%
D133522702.022169%

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 14003 13354 63 63 0.45% 0.47%
B 14003 13354 558 558 3.98% 4.18%
C 14003 13354 439 439 3.14% 3.29%
D 14003 13354 132 132 0.94% 0.99%

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 12 189 384386 1221.22 1575 1542 313.5
A 15 223 243642 772.27 1575 1542 313.5
A 1 162 212261 672.16 1575 1542 313.5
B 4 239 2059091 7292.02 1507 1471 282.2
B 3 64 259716 915.2 1507 1471 282.2
B 0 85 142619 500.22 1507 1471 282.2
C 0 207 1430656 4158.2 1498 1501 343.7
C 13 61 11165 28.12 1498 1501 343.7
C 14 234 5009 10.21 1498 1501 343.7
D 1 52 1079637 2967.49 1524 1477 363.3
D 8 195 534143 1466.09 1524 1477 363.3
D 2 234 58811 157.8 1524 1477 363.3

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