ASTROSAT CZTI

Data Quality Report

Orbit 00381

Creation date: 2024-06-27T13:59:12.038863
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/AS1P01_161T05_9000000058_00381cztM0_level2.evt modeM0/AS1P01_161T05_9000000058_00381cztM0_level2_quad_clean.evt
Size (bytes)812,191,68043,663,680
Size774.6 MB 41.6 MB
Events in quadrant A6,009,773252,594
Events in quadrant B5,743,732241,177
Events in quadrant C5,778,768251,785
Events in quadrant D6,731,740224,517

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214643
B0206352
C0207312
D0236122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50161001.993620%
B501680.159490%
C5016190.378788%
D50163837.635566%

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 7231 5017 244 244 3.37% 4.86%
B 7231 5017 64 64 0.89% 1.28%
C 7231 5017 106 106 1.47% 2.11%
D 7231 5017 663 663 9.17% 13.22%

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 0 69 391736 1213.93 1429 1411 321.5
A 0 238 68649 209.11 1429 1411 321.5
A 12 150 11720 32.06 1429 1411 321.5
B 0 207 36184 100.38 1474 1480 345.7
B 0 182 22992 62.22 1474 1480 345.7
B 5 46 10273 25.43 1474 1480 345.7
C 10 107 222264 586.45 1350 1401 376.6
C 1 1 95512 249.89 1350 1401 376.6
C 3 159 82269 214.73 1350 1401 376.6
D 7 85 1010466 2561.41 1239 1284 394.0
D 13 7 466411 1180.54 1239 1284 394.0
D 13 155 147831 371.95 1239 1284 394.0

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