ASTROSAT CZTI

Data Quality Report

Orbit 31482

Creation date: 2024-06-27T20:29:05.134577
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/AS1T04_028T01_9000004584_31482cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31482cztM0_level2_quad_clean.evt
Size (bytes)551,816,64094,040,640
Size526.3 MB 89.7 MB
Events in quadrant A3,182,787627,028
Events in quadrant B5,448,759627,595
Events in quadrant C3,682,715585,946
Events in quadrant D3,976,896573,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131952
B0203553
C0146092
D0159452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217220.353868%
B62162944.729730%
C62162634.231017%
D6216951.528314%

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 7512 6218 0 0 0.00% 0.00%
B 7510 6215 200 200 2.66% 3.22%
C 7511 6217 172 172 2.29% 2.77%
D 7511 6216 79 79 1.05% 1.27%

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 13 32952 197.6 817 802 162.7
A 13 254 11148 63.59 817 802 162.7
A 3 137 7864 43.4 817 802 162.7
B 6 159 1662713 10971.0 803 783 151.5
B 12 1 537569 3543.52 803 783 151.5
B 4 80 28407 182.36 803 783 151.5
C 0 10 486130 2694.79 769 776 180.1
C 14 238 126363 697.29 769 776 180.1
C 3 233 46782 255.44 769 776 180.1
D 8 195 596376 3235.98 775 756 184.1
D 12 218 215924 1169.0 775 756 184.1
D 13 249 111394 601.09 775 756 184.1

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