ASTROSAT CZTI

Data Quality Report

Orbit 33587

Creation date: 2024-06-27T20:50:29.248157
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/AS1A11_060T01_9000004808_33587cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33587cztM0_level2_quad_clean.evt
Size (bytes)647,732,16066,467,520
Size617.7 MB 63.4 MB
Events in quadrant A6,365,497401,107
Events in quadrant B4,143,395391,322
Events in quadrant C3,892,645404,707
Events in quadrant D4,802,741388,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233173
B0162522
C0152162
D0185042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A610578212.809173%
B61054857.944308%
C61051161.900082%
D61052033.325143%

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 9121 6107 603 603 6.61% 9.87%
B 9121 6106 358 358 3.93% 5.86%
C 9121 6107 105 105 1.15% 1.72%
D 9120 6106 177 177 1.94% 2.90%

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 15 169 3665663 26593.82 685 671 137.8
A 12 16 36095 257.04 685 671 137.8
A 12 194 10923 74.39 685 671 137.8
B 5 172 1191987 8943.61 686 668 133.2
B 0 190 118286 882.99 686 668 133.2
B 4 251 42507 314.1 686 668 133.2
C 3 233 723433 4509.01 691 696 160.3
C 15 214 259023 1611.65 691 696 160.3
C 0 10 202913 1261.59 691 696 160.3
D 8 195 879872 5155.83 684 663 170.5
D 13 249 546378 3200.16 684 663 170.5
D 1 52 255442 1494.07 684 663 170.5

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