ASTROSAT CZTI

Data Quality Report

Orbit 14623

Creation date: 2024-06-27T16:57:39.021250
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/AS1G08_026T01_9000002154_14623cztM0_level2.evt modeM0/AS1G08_026T01_9000002154_14623cztM0_level2_quad_clean.evt
Size (bytes)624,156,480104,163,840
Size595.2 MB 99.3 MB
Events in quadrant A3,747,469676,281
Events in quadrant B4,041,903669,063
Events in quadrant C5,245,701654,694
Events in quadrant D5,358,970631,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161003
B0169742
C0212832
D0211682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7513771.024890%
B75131952.595501%
C7513871.157993%
D75136328.412086%

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 7809 7516 2 2 0.03% 0.03%
B 7809 7515 58 58 0.74% 0.77%
C 7809 7516 0 0 0.00% 0.00%
D 7809 7516 530 530 6.79% 7.05%

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 1 162 83023 442.64 907 889 185.6
A 1 178 35888 188.62 907 889 185.6
A 1 161 31481 164.87 907 889 185.6
B 10 16 374832 2146.27 902 880 174.2
B 0 229 35645 199.53 902 880 174.2
B 0 189 31346 174.86 902 880 174.2
C 3 233 1806971 8853.94 880 886 204.0
C 13 61 6353 26.8 880 886 204.0
C 3 234 4620 18.31 880 886 204.0
D 10 199 1680850 8292.21 849 827 202.6
D 12 110 383432 1888.45 849 827 202.6
D 13 172 26302 125.74 849 827 202.6

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