ASTROSAT CZTI

Data Quality Report

Orbit 37548

Creation date: 2024-06-27T21:41:23.136791
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/AS1T05_051T01_9000005334_37548cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37548cztM0_level2_quad_clean.evt
Size (bytes)409,887,36065,784,960
Size390.9 MB 62.7 MB
Events in quadrant A2,684,527419,434
Events in quadrant B2,867,423426,150
Events in quadrant C2,982,388409,205
Events in quadrant D3,535,206382,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110753
B0116162
C0119172
D0138732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5059150.296501%
B5059761.502273%
C50591072.115042%
D50592725.376557%

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 7001 5060 8 8 0.11% 0.16%
B 7001 5060 45 45 0.64% 0.89%
C 7001 5060 113 113 1.61% 2.23%
D 7001 5060 276 276 3.94% 5.45%

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 10 83 310439 2598.52 594 584 119.2
A 12 189 22327 182.34 594 584 119.2
A 7 16 14856 119.69 594 584 119.2
B 5 255 97606 846.32 596 582 114.6
B 5 172 86982 753.65 596 582 114.6
B 15 85 58383 504.19 596 582 114.6
C 15 208 220245 1665.51 569 575 131.9
C 15 214 214914 1625.09 569 575 131.9
C 14 254 148605 1122.34 569 575 131.9
D 2 249 785613 5804.84 555 540 135.2
D 2 153 155176 1143.38 555 540 135.2
D 12 235 140983 1038.44 555 540 135.2

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