ASTROSAT CZTI

Data Quality Report

Orbit 20581

Creation date: 2024-06-27T18:17:04.326776
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/AS1A06_003T04_9000003046_20581cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20581cztM0_level2_quad_clean.evt
Size (bytes)526,383,36063,544,320
Size502.0 MB 60.6 MB
Events in quadrant A3,345,050379,564
Events in quadrant B3,866,885384,127
Events in quadrant C3,371,955366,651
Events in quadrant D4,930,313353,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138551
B0156591
C0138831
D0191103

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6299731.158914%
B63001282.031746%
C6300981.555556%
D62992604.127639%

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 7539 6300 1 1 0.01% 0.02%
B 7540 6301 28 28 0.37% 0.44%
C 7540 6301 0 0 0.00% 0.00%
D 7539 6300 165 165 2.19% 2.62%

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 0 226 7695 39.63 865 848 172.8
A 12 194 6347 31.83 865 848 172.8
A 3 137 6273 31.4 865 848 172.8
B 7 220 348969 2192.48 853 835 158.8
B 0 189 53510 331.74 853 835 158.8
B 4 171 32242 197.8 853 835 158.8
C 14 238 131314 688.46 822 829 189.5
C 8 208 31657 162.65 822 829 189.5
C 13 61 5865 26.57 822 829 189.5
D 1 52 540625 2717.78 832 809 198.6
D 5 222 400525 2012.43 832 809 198.6
D 1 20 220880 1107.98 832 809 198.6

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