ASTROSAT CZTI

Data Quality Report

Orbit 42770

Creation date: 2024-06-27T22:44:02.206216
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/AS1A05_013T01_9000005822_42770cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42770cztM0_level2_quad_clean.evt
Size (bytes)360,357,120101,338,560
Size343.7 MB 96.6 MB
Events in quadrant A3,586,669677,145
Events in quadrant B2,719,241676,026
Events in quadrant C3,051,116676,601
Events in quadrant D3,511,570616,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141592
B0123112
C0127553
D0146382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6046641.058551%
B6046240.396957%
C6045290.479735%
D60451792.961125%

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 7329 6047 47 47 0.64% 0.78%
B 7329 6047 12 12 0.16% 0.20%
C 7328 6046 22 22 0.30% 0.36%
D 7328 6046 194 194 2.65% 3.21%

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 634936 4564.82 675 661 138.9
A 13 248 223618 1604.6 675 661 138.9
A 2 79 69311 494.07 675 661 138.9
B 15 85 23450 178.11 661 643 128.0
B 5 172 21145 160.11 661 643 128.0
B 0 245 18606 140.28 661 643 128.0
C 15 214 251176 1632.19 657 662 153.5
C 14 254 152660 990.32 657 662 153.5
C 5 250 47487 305.08 657 662 153.5
D 5 171 507256 3168.14 657 640 159.9
D 12 217 179428 1118.06 657 640 159.9
D 2 249 137496 855.83 657 640 159.9

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