ASTROSAT CZTI

Data Quality Report

Orbit 06471

Creation date: 2024-06-27T15:07:39.436769
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_139T02_9000000862_06471cztM0_level2.evt modeM0/AS1G06_139T02_9000000862_06471cztM0_level2_quad_clean.evt
Size (bytes)443,347,20066,683,520
Size422.8 MB 63.6 MB
Events in quadrant A3,357,035398,288
Events in quadrant B3,316,464400,076
Events in quadrant C3,110,676393,257
Events in quadrant D3,205,724379,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141703
B0137382
C0134602
D0138392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64321261.958955%
B64321382.145522%
C6432901.399254%
D64331081.678843%

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 8952 6434 6 6 0.07% 0.09%
B 8952 6434 1 1 0.01% 0.02%
C 8952 6434 0 0 0.00% 0.00%
D 8953 6435 17 17 0.19% 0.26%

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 15 236 137009 811.08 820 801 167.9
A 8 15 59289 348.28 820 801 167.9
A 10 133 10517 57.86 820 801 167.9
B 4 81 60924 375.78 828 810 160.0
B 12 111 16294 96.79 828 810 160.0
B 0 229 14475 85.42 828 810 160.0
C 13 61 6328 29.92 795 799 184.8
C 12 4 5861 27.4 795 799 184.8
C 1 16 2784 10.74 795 799 184.8
D 2 14 69861 353.47 792 768 195.5
D 2 152 56078 282.96 792 768 195.5
D 2 234 18616 91.31 792 768 195.5

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