ASTROSAT CZTI

Data Quality Report

Orbit 35132

Creation date: 2022-03-28T22:06:34.877537
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/AS1A11_047T09_9000005028_35132cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35132cztM0_level2_quad_clean.evt
Size (bytes)699,750,72082,517,760
Size667.3 MB 78.7 MB
Events in quadrant A9,475,207396,892
Events in quadrant B3,541,382609,853
Events in quadrant C2,725,687596,151
Events in quadrant D5,121,395553,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314782
B0136391
C0107791
D0187021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4864307463.199013%
B48641903.906250%
C4864501.027961%
D48642765.674342%

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 6988 4865 2568 2568 36.75% 52.79%
B 6988 4865 151 151 2.16% 3.10%
C 6988 4865 32 32 0.46% 0.66%
D 6988 4865 262 262 3.75% 5.39%

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 7787191 92108.46 425 419 84.5
A 10 83 31038 362.19 425 419 84.5
A 13 6 7885 88.31 425 419 84.5
B 5 172 450925 3831.96 616 603 117.5
B 5 236 400436 3402.33 616 603 117.5
B 0 189 115942 981.46 616 603 117.5
C 15 214 200329 1431.27 603 610 139.5
C 0 10 122929 876.59 603 610 139.5
C 14 67 25579 178.94 603 610 139.5
D 8 195 2000241 13620.66 606 590 146.8
D 13 249 198353 1347.07 606 590 146.8
D 10 118 164743 1118.13 606 590 146.8

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