ASTROSAT CZTI

Data Quality Report

Orbit 30887

Creation date: 2024-06-27T20:20:47.549424
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/AS1A10_071T28_9000004464_30887cztM0_level2.evt modeM0/AS1A10_071T28_9000004464_30887cztM0_level2_quad_clean.evt
Size (bytes)563,215,68092,520,000
Size537.1 MB 88.2 MB
Events in quadrant A3,137,377613,592
Events in quadrant B5,589,793612,507
Events in quadrant C3,362,141577,801
Events in quadrant D4,536,405553,155

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133532
B0207922
C0139282
D0177953

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6369380.596640%
B63691772.779086%
C63691732.716282%
D63682654.161432%

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 7554 6369 0 0 0.00% 0.00%
B 7554 6369 54 54 0.71% 0.85%
C 7554 6369 29 29 0.38% 0.46%
D 7553 6369 214 214 2.83% 3.36%

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 13 254 12052 68.84 813 797 163.5
A 3 137 7998 44.05 813 797 163.5
A 0 226 6694 36.07 813 797 163.5
B 6 159 1844024 12110.08 806 789 152.2
B 6 36 218878 1432.85 806 789 152.2
B 4 171 116437 759.81 806 789 152.2
C 14 238 137217 752.13 771 776 181.4
C 0 10 118669 649.88 771 776 181.4
C 3 233 42746 231.36 771 776 181.4
D 8 195 547864 3024.75 764 747 180.9
D 12 218 299123 1649.58 764 747 180.9
D 12 233 287385 1584.68 764 747 180.9

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