ASTROSAT CZTI

Data Quality Report

Orbit 34548

Creation date: 2022-02-17T11:49:44.419146
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_097T01_9000004936_34548cztM0_level2.evt modeM0/AS1A05_097T01_9000004936_34548cztM0_level2_quad_clean.evt
Size (bytes)477,146,88070,381,440
Size455.0 MB 67.1 MB
Events in quadrant A2,685,806439,146
Events in quadrant B3,669,660439,531
Events in quadrant C2,929,423445,263
Events in quadrant D4,785,236414,909

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114803
B0143642
C0118872
D0182212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560880.142653%
B56082875.117689%
C560880.142653%
D56081502.674750%

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 7311 5609 3 3 0.04% 0.05%
B 7311 5609 206 206 2.82% 3.67%
C 7311 5609 5 5 0.07% 0.09%
D 7311 5609 118 118 1.61% 2.10%

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 41240 299.72 672 659 135.4
A 9 143 28042 202.24 672 659 135.4
A 13 254 8961 61.32 672 659 135.4
B 5 172 873232 6916.54 650 632 126.2
B 4 81 49019 383.53 650 632 126.2
B 15 85 47510 371.57 650 632 126.2
C 15 214 246491 1617.51 652 656 152.0
C 14 67 97330 636.08 652 656 152.0
C 0 10 40550 262.49 652 656 152.0
D 8 195 1338145 8434.23 648 630 158.6
D 2 250 422695 2661.5 648 630 158.6
D 12 17 228619 1437.68 648 630 158.6

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