ASTROSAT CZTI

Data Quality Report

Orbit 16734

Creation date: 2024-06-27T17:26:58.699498
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_202T01_9000002484_16734cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16734cztM0_level2_quad_clean.evt
Size (bytes)625,155,840127,293,120
Size596.2 MB 121.4 MB
Events in quadrant A6,438,796836,615
Events in quadrant B3,655,451902,055
Events in quadrant C3,302,973856,159
Events in quadrant D5,094,886805,678

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235183
B0151272
C0139772
D0195742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A650699015.216723%
B65061352.075008%
C6506851.306486%
D65074967.622560%

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 7677 6508 607 607 7.91% 9.33%
B 7677 6508 21 21 0.27% 0.32%
C 7677 6508 1 1 0.01% 0.02%
D 7678 6509 352 352 4.58% 5.41%

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 15 174 2327033 14994.83 779 763 155.1
A 0 23 975800 6284.96 779 763 155.1
A 10 234 68885 439.11 779 763 155.1
B 7 220 122101 812.6 811 792 149.3
B 15 35 69859 462.65 811 792 149.3
B 5 236 66570 440.62 811 792 149.3
C 14 238 122111 689.83 769 774 175.9
C 0 207 85443 481.36 769 774 175.9
C 3 233 48288 270.13 769 774 175.9
D 2 16 870545 4810.62 753 731 180.8
D 15 0 510199 2817.68 753 731 180.8
D 5 222 477519 2636.94 753 731 180.8

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