ASTROSAT CZTI

Data Quality Report

Orbit 21311

Creation date: 2024-06-27T18:26:15.373535
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_037T01_9000003144_21311cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21311cztM0_level2_quad_clean.evt
Size (bytes)576,357,120107,265,600
Size549.7 MB 102.3 MB
Events in quadrant A4,414,283686,020
Events in quadrant B3,837,525701,180
Events in quadrant C3,653,388680,505
Events in quadrant D5,034,692652,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185032
B0163842
C0158132
D0201952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7600670.881579%
B7601811.065649%
C7601710.934088%
D76012393.144323%

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 8480 7602 15 15 0.18% 0.20%
B 8481 7603 10 10 0.12% 0.13%
C 8481 7603 1 1 0.01% 0.01%
D 8481 7603 153 153 1.80% 2.01%

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 15 236 711872 3809.08 921 903 186.7
A 9 143 74095 392.13 921 903 186.7
A 5 16 36766 192.14 921 903 186.7
B 3 64 60804 333.51 924 901 179.6
B 0 189 39201 213.24 924 901 179.6
B 0 230 37633 204.51 924 901 179.6
C 14 238 137357 656.73 884 888 207.8
C 10 23 44067 207.79 884 888 207.8
C 8 128 12192 54.4 884 888 207.8
D 1 52 750381 3464.11 885 862 216.4
D 13 174 453364 2091.36 885 862 216.4
D 12 235 148946 684.41 885 862 216.4

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