ASTROSAT CZTI

Data Quality Report

Orbit 34620

Creation date: 2022-03-02T09:58:32.786137
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_058T02_9000004954_34620cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34620cztM0_level2_quad_clean.evt
Size (bytes)540,708,48073,134,720
Size515.7 MB 69.7 MB
Events in quadrant A2,675,377467,465
Events in quadrant B3,900,773462,017
Events in quadrant C3,078,856463,585
Events in quadrant D6,328,037416,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117703
B0152932
C0126912
D0228502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579450.086296%
B57942874.953400%
C5794711.225406%
D579465011.218502%

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 8959 5796 0 0 0.00% 0.00%
B 8959 5796 188 188 2.10% 3.24%
C 8959 5796 47 47 0.52% 0.81%
D 8959 5796 552 552 6.16% 9.52%

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 45308 325.08 674 660 137.3
A 13 254 10506 71.69 674 660 137.3
A 13 6 8817 59.39 674 660 137.3
B 5 172 1189310 9328.78 660 642 127.4
B 4 171 47976 371.48 660 642 127.4
B 4 232 42501 328.51 660 642 127.4
C 15 214 241499 1609.32 647 653 149.7
C 0 10 188583 1255.74 647 653 149.7
C 14 67 96580 640.98 647 653 149.7
D 8 195 1839252 11985.53 623 603 153.4
D 2 249 1511436 9848.61 623 603 153.4
D 2 250 167584 1088.49 623 603 153.4

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