ASTROSAT CZTI

Data Quality Report

Orbit 40724

Creation date: 2024-06-27T22:19:38.378357
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_042T01_9000005560_40724cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40724cztM0_level2_quad_clean.evt
Size (bytes)412,876,80081,538,560
Size393.8 MB 77.8 MB
Events in quadrant A2,746,493576,214
Events in quadrant B2,557,817593,470
Events in quadrant C6,984,087459,309
Events in quadrant D2,590,868476,120

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112083
B0112102
C0243792
D0113432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5189110.211987%
B5189380.732318%
C5189122223.549817%
D51894218.113317%

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 7101 5190 4 4 0.06% 0.08%
B 7101 5190 24 24 0.34% 0.46%
C 7101 5190 1162 1162 16.36% 22.39%
D 7100 5189 26 26 0.37% 0.50%

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 498265 4314.34 565 555 115.4
A 6 10 32852 279.96 565 555 115.4
A 12 189 26459 224.55 565 555 115.4
B 0 229 124775 1153.78 562 547 107.7
B 15 85 70814 652.61 562 547 107.7
B 0 190 52144 479.21 562 547 107.7
C 9 187 4649247 40446.12 498 501 114.9
C 15 214 208108 1806.27 498 501 114.9
C 14 254 154694 1341.55 498 501 114.9
D 12 191 158310 1233.45 520 505 127.9
D 1 47 141475 1101.86 520 505 127.9
D 2 153 61371 475.75 520 505 127.9

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