ASTROSAT CZTI

Data Quality Report

Orbit 35528

Creation date: 2022-04-24T16:37:53.903534
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/AS1A11_097T09_9000005086_35528cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35528cztM0_level2_quad_clean.evt
Size (bytes)509,702,40083,615,040
Size486.1 MB 79.7 MB
Events in quadrant A3,332,333529,927
Events in quadrant B4,211,793511,473
Events in quadrant C3,855,595524,850
Events in quadrant D3,584,496501,054

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142143
B0167832
C0153212
D0149732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A666790.134993%
B66673715.564722%
C66671121.679916%
D6667600.899955%

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 9323 6669 0 0 0.00% 0.00%
B 9323 6669 285 285 3.06% 4.27%
C 9323 6669 77 77 0.83% 1.15%
D 9323 6669 45 45 0.48% 0.67%

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 15 169 194182 1227.92 773 757 157.5
A 10 83 147820 933.6 773 757 157.5
A 3 137 8513 49.24 773 757 157.5
B 5 236 963309 6557.66 753 731 146.8
B 5 172 105982 717.03 753 731 146.8
B 5 207 69475 468.33 753 731 146.8
C 0 10 400915 2263.55 751 756 176.8
C 15 214 275300 1552.99 751 756 176.8
C 0 207 186928 1053.1 751 756 176.8
D 8 195 213678 1167.26 748 729 182.4
D 2 250 202498 1105.98 748 729 182.4
D 12 235 77183 419.07 748 729 182.4

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