ASTROSAT CZTI

Data Quality Report

Orbit 00141

Creation date: 2024-06-27T13:56:56.310322
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_140T01_9000000004_00141cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00141cztM0_level2_quad_clean.evt
Size (bytes)884,390,40067,838,400
Size843.4 MB 64.7 MB
Events in quadrant A6,742,593422,468
Events in quadrant B6,449,429437,445
Events in quadrant C5,742,656425,410
Events in quadrant D7,498,885399,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238092
B0228971
C0208041
D0260351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52831312.479652%
B5283140.265001%
C528330.056786%
D52832514.751088%

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 6875 5285 372 372 5.41% 7.04%
B 6875 5285 135 135 1.96% 2.55%
C 6875 5285 41 41 0.60% 0.78%
D 6875 5285 645 645 9.38% 12.20%

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 22 476074 1876.97 1563 1527 252.8
A 13 224 102081 397.72 1563 1527 252.8
A 12 150 24243 89.85 1563 1527 252.8
B 8 236 121718 347.99 1565 1562 345.3
B 5 216 78063 221.56 1565 1562 345.3
B 0 255 44650 124.79 1565 1562 345.3
C 3 32 10074 21.12 1448 1501 405.9
C 10 56 7130 13.87 1448 1501 405.9
C 2 192 6891 13.28 1448 1501 405.9
D 1 30 150206 375.72 1565 1524 395.7
D 14 53 147686 369.35 1565 1524 395.7
D 13 222 86101 213.73 1565 1524 395.7

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