ASTROSAT CZTI

Data Quality Report

Orbit 15441

Creation date: 2024-06-27T17:08:33.625447
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/AS1T02_080T01_9000002276_15441cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15441cztM0_level2_quad_clean.evt
Size (bytes)486,380,16069,984,000
Size463.8 MB 66.7 MB
Events in quadrant A3,536,539410,056
Events in quadrant B3,445,647420,502
Events in quadrant C3,762,565420,538
Events in quadrant D3,535,135405,350

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147540
B0143270
C0152840
D0149520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6636971.461724%
B66371051.582040%
C6636791.190476%
D6636991.491863%

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 8801 6636 6 6 0.07% 0.09%
B 8802 6638 10 10 0.11% 0.15%
C 8801 6637 0 0 0.00% 0.00%
D 8801 6638 30 30 0.34% 0.45%

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 14 238 125387 734.86 844 829 169.5
A 15 249 108468 635.04 844 829 169.5
A 14 237 39145 226.05 844 829 169.5
B 0 189 27622 167.56 851 830 159.9
B 0 213 23396 141.13 851 830 159.9
B 15 222 22732 136.98 851 830 159.9
C 3 233 495042 2609.19 831 836 189.4
C 8 128 11068 54.02 831 836 189.4
C 13 61 5801 26.21 831 836 189.4
D 5 222 180753 899.13 829 805 200.1
D 10 70 121089 601.01 829 805 200.1
D 1 52 48740 239.51 829 805 200.1

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