ASTROSAT CZTI

Data Quality Report

Orbit 01325

Creation date: 2024-06-27T14:11:00.744970
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/AS1G04_002T02_9000000230_01325cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01325cztM0_level2_quad_clean.evt
Size (bytes)1,127,891,520101,828,160
Size1.1 GB 97.1 MB
Events in quadrant A8,478,605667,666
Events in quadrant B8,987,072660,744
Events in quadrant C8,328,916643,604
Events in quadrant D7,909,785634,051

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300612
B0315541
C0295721
D0283781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6854110.160490%
B6854510.744091%
C6854260.379341%
D6854711.035891%

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 7549 6854 202 202 2.68% 2.95%
B 7549 6855 416 416 5.51% 6.07%
C 7549 6855 155 155 2.05% 2.26%
D 7549 6854 266 266 3.52% 3.88%

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 8 14 135302 261.33 2108 2120 509.6
A 4 32 99599 191.28 2108 2120 509.6
A 14 5 61846 117.2 2108 2120 509.6
B 8 4 441290 854.3 2183 2189 514.0
B 5 249 94298 179.2 2183 2189 514.0
B 6 53 45825 84.9 2183 2189 514.0
C 15 241 339908 604.11 2005 2082 559.2
C 3 9 72946 126.72 2005 2082 559.2
C 3 79 27678 45.77 2005 2082 559.2
D 10 84 238969 390.84 1951 2016 606.3
D 1 83 113215 183.41 1951 2016 606.3
D 2 33 101940 164.82 1951 2016 606.3

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