ASTROSAT CZTI

Data Quality Report

Orbit 18830

Creation date: 2024-06-27T17:55:22.418115
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_173T01_9000002812_18830cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18830cztM0_level2_quad_clean.evt
Size (bytes)441,083,52082,817,280
Size420.7 MB 79.0 MB
Events in quadrant A2,959,383543,926
Events in quadrant B3,120,501553,183
Events in quadrant C3,056,170518,485
Events in quadrant D3,835,511494,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120061
B0126071
C0123361
D0149531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5693290.509398%
B5693571.001230%
C5693661.159318%
D56932654.654839%

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 6993 5694 1 1 0.01% 0.02%
B 6993 5694 6 6 0.09% 0.11%
C 6993 5694 10 10 0.14% 0.18%
D 6993 5694 240 240 3.43% 4.21%

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 8 205 46620 303.69 753 742 151.1
A 13 254 9223 56.14 753 742 151.1
A 0 226 6609 38.84 753 742 151.1
B 4 171 48136 338.45 747 731 140.1
B 4 216 40836 286.33 747 731 140.1
B 0 229 35077 245.21 747 731 140.1
C 14 238 111639 666.62 713 721 166.4
C 5 112 70579 419.85 713 721 166.4
C 3 233 50949 301.87 713 721 166.4
D 1 52 975777 5530.23 720 702 176.3
D 7 38 101230 570.15 720 702 176.3
D 2 234 22431 123.24 720 702 176.3

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