ASTROSAT CZTI

Data Quality Report

Orbit 36339

Creation date: 2022-06-18T10:15:26.739141
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/AS1C07_001T08_9000005190_36339cztM0_level2.evt modeM0/AS1C07_001T08_9000005190_36339cztM0_level2_quad_clean.evt
Size (bytes)458,447,04081,768,960
Size437.2 MB 78.0 MB
Events in quadrant A2,759,162523,553
Events in quadrant B3,854,418513,130
Events in quadrant C2,924,935531,830
Events in quadrant D3,947,361497,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120812
B0154041
C0123821
D0159371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5861100.170619%
B58612734.657908%
C5861130.221805%
D58611923.275891%

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 7174 5862 2 2 0.03% 0.03%
B 7174 5862 230 230 3.21% 3.92%
C 7174 5862 8 8 0.11% 0.14%
D 7174 5862 199 199 2.77% 3.39%

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 185725 1424.19 644 631 130.0
A 9 143 34714 262.25 644 631 130.0
A 12 189 20633 153.9 644 631 130.0
B 5 172 608811 5056.02 631 614 120.3
B 5 236 264106 2190.44 631 614 120.3
B 0 190 109512 905.28 631 614 120.3
C 15 214 254062 1727.76 634 639 146.7
C 0 207 150988 1025.03 634 639 146.7
C 0 10 36222 242.59 634 639 146.7
D 12 6 579137 3788.03 623 605 152.7
D 12 235 368392 2408.14 623 605 152.7
D 2 153 135906 885.9 623 605 152.7

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