ASTROSAT CZTI

Data Quality Report

Orbit 34712

Creation date: 2022-03-02T16:18:59.733432
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/AS1A09_038T36_9000004976_34712cztM0_level2.evt modeM0/AS1A09_038T36_9000004976_34712cztM0_level2_quad_clean.evt
Size (bytes)387,544,32084,700,800
Size369.6 MB 80.8 MB
Events in quadrant A2,919,351553,753
Events in quadrant B2,140,863598,355
Events in quadrant C2,148,083597,811
Events in quadrant D4,267,730543,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109850
B085140
C085600
D0154080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384043511.328125%
B3840451.171875%
C384010.026042%
D38402697.005208%

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 3840 3840 329 329 8.57% 8.57%
B 3840 3840 31 31 0.81% 0.81%
C 3840 3840 0 0 0.00% 0.00%
D 3840 3840 285 285 7.42% 7.42%

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 15 169 1069709 11536.67 467 460 92.7
A 9 143 19476 205.17 467 460 92.7
A 10 83 12988 135.17 467 460 92.7
B 5 172 119637 1315.87 487 476 90.6
B 0 155 34992 381.15 487 476 90.6
B 0 189 33781 367.78 487 476 90.6
C 15 214 163478 1481.25 484 488 110.0
C 4 254 75069 677.79 484 488 110.0
C 14 67 6637 55.88 484 488 110.0
D 8 195 1382765 11104.74 473 462 124.5
D 12 233 598035 4800.61 473 462 124.5
D 14 52 136561 1093.35 473 462 124.5

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