ASTROSAT CZTI

Data Quality Report

Orbit 35579

Creation date: 2022-04-28T02:35:03.575498
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/AS1A10_071T01_9000005096_35579cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35579cztM0_level2_quad_clean.evt
Size (bytes)433,854,72075,297,600
Size413.8 MB 71.8 MB
Events in quadrant A2,599,069499,581
Events in quadrant B4,056,818468,154
Events in quadrant C3,095,063484,716
Events in quadrant D3,042,051470,124

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108573
B0152782
C0121672
D0123112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5097150.294291%
B509751110.025505%
C50971763.453012%
D5097571.118305%

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 7069 5098 4 4 0.06% 0.08%
B 7069 5098 374 374 5.29% 7.34%
C 7069 5098 123 123 1.74% 2.41%
D 7069 5098 58 58 0.82% 1.14%

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 134731 1057.58 631 620 126.8
A 13 6 15743 119.26 631 620 126.8
A 9 143 12818 96.19 631 620 126.8
B 5 172 1690052 14773.8 598 584 114.4
B 12 111 13724 114.9 598 584 114.4
B 11 111 12502 104.22 598 584 114.4
C 0 10 503751 3574.12 607 614 140.8
C 15 214 211567 1498.54 607 614 140.8
C 14 67 13387 90.74 607 614 140.8
D 7 80 274791 1834.07 613 596 149.5
D 12 233 117420 781.43 613 596 149.5
D 8 195 117116 779.39 613 596 149.5

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