ASTROSAT CZTI

Data Quality Report

Orbit 12326

Creation date: 2024-06-27T16:25:30.494138
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/AS1A04_048T01_9000001820_12326cztM0_level2.evt modeM0/AS1A04_048T01_9000001820_12326cztM0_level2_quad_clean.evt
Size (bytes)572,762,88097,776,000
Size546.2 MB 93.2 MB
Events in quadrant A4,403,616614,984
Events in quadrant B4,732,032620,277
Events in quadrant C3,477,322620,317
Events in quadrant D4,230,805590,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181563
B0190262
C0153792
D0177892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74051892.552330%
B74056198.359217%
C7405520.702228%
D74051702.295746%

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 9001 7408 10 10 0.11% 0.13%
B 9001 7408 212 212 2.36% 2.86%
C 9001 7408 14 14 0.16% 0.19%
D 9001 7408 98 98 1.09% 1.32%

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 1 162 268317 1477.9 875 855 181.0
A 13 251 166677 916.27 875 855 181.0
A 1 178 150675 827.85 875 855 181.0
B 4 239 963875 6055.16 837 818 159.0
B 0 85 208219 1304.02 837 818 159.0
B 3 64 161702 1011.55 837 818 159.0
C 4 254 60442 300.94 855 859 198.0
C 15 208 33225 163.47 855 859 198.0
C 0 207 31550 155.01 855 859 198.0
D 10 199 260949 1288.64 841 817 201.9
D 14 34 210778 1040.1 841 817 201.9
D 1 52 180190 888.58 841 817 201.9

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