ASTROSAT CZTI

Data Quality Report

Orbit 16799

Creation date: 2024-06-27T17:27:46.037798
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/AS1A05_004T04_9000002494_16799cztM0_level2.evt modeM0/AS1A05_004T04_9000002494_16799cztM0_level2_quad_clean.evt
Size (bytes)761,595,84079,387,200
Size726.3 MB 75.7 MB
Events in quadrant A9,369,187423,501
Events in quadrant B3,427,682517,982
Events in quadrant C3,907,101497,741
Events in quadrant D5,886,673475,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324333
B0146702
C0159072
D0222872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7020242434.529915%
B7020620.883191%
C70201412.008547%
D70205818.276353%

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 8596 7023 2143 2143 24.93% 30.51%
B 8596 7023 3 3 0.03% 0.04%
C 8596 7023 2 2 0.02% 0.03%
D 8596 7023 423 423 4.92% 6.02%

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 15 174 6563198 45035.65 717 701 145.7
A 10 234 28787 192.74 717 701 145.7
A 9 143 11409 73.48 717 701 145.7
B 0 229 53894 326.61 840 819 162.5
B 0 189 37319 224.61 840 819 162.5
B 12 111 19350 114.04 840 819 162.5
C 3 233 577192 3047.1 806 811 189.2
C 14 238 123954 651.01 806 811 189.2
C 0 207 43228 224.24 806 811 189.2
D 1 52 2274247 11831.04 789 765 192.2
D 12 218 295164 1532.03 789 765 192.2
D 13 248 248815 1290.83 789 765 192.2

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