ASTROSAT CZTI

Data Quality Report

Orbit 34151

Creation date: 2024-06-27T20:57:09.457284
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_054T07_9000004878_34151cztM0_level2.evt modeM0/AS1A11_054T07_9000004878_34151cztM0_level2_quad_clean.evt
Size (bytes)69,811,20016,358,400
Size66.6 MB 15.6 MB
Events in quadrant A395,271108,062
Events in quadrant B470,600111,843
Events in quadrant C580,515105,474
Events in quadrant D605,294101,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017672
B019691
C022511
D024101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87810.113895%
B878131.480638%
C878596.719818%
D878343.872437%

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 878 878 0 0 0.00% 0.00%
B 878 878 13 13 1.48% 1.48%
C 878 878 51 51 5.81% 5.81%
D 878 878 29 29 3.30% 3.30%

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 9060 412.03 99 98 21.8
A 13 254 1316 56.0 99 98 21.8
A 3 137 987 40.87 99 98 21.8
B 5 255 36774 1726.15 98 96 21.2
B 5 172 35080 1646.43 98 96 21.2
B 0 229 4532 208.77 98 96 21.2
C 0 10 166887 7256.57 92 93 23.0
C 15 214 42423 1841.62 92 93 23.0
C 6 96 5104 218.01 92 93 23.0
D 8 195 91013 3721.23 93 90 24.4
D 2 250 38863 1586.87 93 90 24.4
D 10 118 33068 1349.7 93 90 24.4

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