ASTROSAT CZTI

Data Quality Report

Orbit 05845

Creation date: 2024-06-27T14:59:54.765740
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/AS1G06_039T01_9000000758_05845cztM0_level2.evt modeM0/AS1G06_039T01_9000000758_05845cztM0_level2_quad_clean.evt
Size (bytes)395,530,560103,098,240
Size377.2 MB 98.3 MB
Events in quadrant A2,763,063680,710
Events in quadrant B2,865,152683,562
Events in quadrant C2,716,254681,831
Events in quadrant D3,209,158640,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127383
B0129582
C0126932
D0140602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240150.240385%
B6240190.304487%
C6240100.160256%
D6240811.298077%

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 7415 6241 2 2 0.03% 0.03%
B 7415 6241 0 0 0.00% 0.00%
C 7415 6241 0 0 0.00% 0.00%
D 7415 6241 62 62 0.84% 0.99%

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 15 234 19770 131.47 706 692 145.1
A 0 31 15882 104.68 706 692 145.1
A 14 111 8094 51.01 706 692 145.1
B 0 214 25390 181.4 716 698 136.1
B 15 85 20509 145.54 716 698 136.1
B 4 48 17954 126.77 716 698 136.1
C 13 61 5821 32.2 693 695 159.2
C 12 4 5213 28.38 693 695 159.2
C 1 16 3166 15.52 693 695 159.2
D 1 239 435387 2634.61 679 657 165.0
D 2 16 51195 306.28 679 657 165.0
D 8 195 35542 211.41 679 657 165.0

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