ASTROSAT CZTI

Data Quality Report

Orbit 38956

Creation date: 2024-06-27T21:58:36.722301
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/AS1T05_064T01_9000005416_38956cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38956cztM0_level2_quad_clean.evt
Size (bytes)343,552,32086,728,320
Size327.6 MB 82.7 MB
Events in quadrant A3,573,865565,049
Events in quadrant B2,536,931600,922
Events in quadrant C2,521,490589,316
Events in quadrant D3,699,250523,320

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136933
B0108862
C0104712
D0143442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49532845.733899%
B4953821.655562%
C4953110.222088%
D49532214.461942%

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 7047 4954 299 299 4.24% 6.04%
B 7047 4954 68 68 0.96% 1.37%
C 7047 4954 7 7 0.10% 0.14%
D 7047 4954 227 227 3.22% 4.58%

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 13 248 1051678 9674.78 538 527 108.6
A 10 83 397023 3649.34 538 527 108.6
A 6 10 27132 244.87 538 527 108.6
B 5 172 257942 2440.44 548 532 105.5
B 5 184 92426 871.23 548 532 105.5
B 0 230 13209 120.19 548 532 105.5
C 15 214 205023 1616.55 549 554 126.5
C 14 254 145579 1146.58 549 554 126.5
C 15 159 12165 91.8 549 554 126.5
D 2 250 668475 5187.78 533 520 128.8
D 12 235 432446 3354.62 533 520 128.8
D 13 249 154359 1194.82 533 520 128.8

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