ASTROSAT CZTI

Data Quality Report

Orbit 35396

Creation date: 2022-04-16T12:41:04.675560
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_099T01_9000005068_35396cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35396cztM0_level2_quad_clean.evt
Size (bytes)816,243,84073,952,640
Size778.4 MB 70.5 MB
Events in quadrant A2,759,275557,458
Events in quadrant B12,289,408272,835
Events in quadrant C3,332,969544,181
Events in quadrant D5,961,162472,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116623
B0402332
C0131762
D0214182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5581120.215015%
B5581453981.329511%
C55811783.189393%
D5581101818.240459%

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 7134 5582 1 1 0.01% 0.02%
B 7134 5582 3975 3975 55.72% 71.21%
C 7134 5582 133 133 1.86% 2.38%
D 7134 5582 807 807 11.31% 14.46%

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 10 83 131943 979.32 661 647 134.1
A 7 48 31470 229.91 661 647 134.1
A 13 6 15631 111.76 661 647 134.1
B 4 251 3749393 53058.94 356 346 70.7
B 5 14 2127424 30103.78 356 346 70.7
B 5 31 2053055 29051.27 356 346 70.7
C 0 207 334888 2262.14 631 636 147.8
C 0 10 257379 1737.57 631 636 147.8
C 15 214 232814 1571.32 631 636 147.8
D 7 80 1623048 11045.33 594 578 146.9
D 1 52 1029465 7004.38 594 578 146.9
D 2 152 175136 1188.34 594 578 146.9

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