ASTROSAT CZTI

Data Quality Report

Orbit 20210705_A10_082T10_9000004512_level2

Creation date: 2021-07-06T21:29:47.866131
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/AS1A10_082T10_9000004512cztM0_level2_bc.evt modeM0/AS1A10_082T10_9000004512cztM0_level2_quad_clean.evt
Size (bytes)1,672,554,240434,505,600
Size1.6 GB 414.4 MB
Events in quadrant A6,456,8902,965,405
Events in quadrant B16,127,6642,849,670
Events in quadrant C7,040,4812,803,996
Events in quadrant D19,183,2232,674,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0583300
B0925960
C0613810
D01033150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271305762.123111%
B2713021968.094360%
C2713010003.685957%
D2713023148.529303%

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 34215 27131 0 0 0.00% 0.00%
B 34214 27128 39 39 0.11% 0.14%
C 34215 27129 35 35 0.10% 0.13%
D 34215 27126 314 314 0.92% 1.16%

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 13 254 50495 138.82 1669 1648 351.9
A 0 226 10717 25.77 1669 1648 351.9
A 12 194 10226 24.38 1669 1648 351.9
B 6 159 7415271 24563.2 1611 1583 301.8
B 4 80 1720341 5694.63 1611 1583 301.8
B 0 190 290548 957.41 1611 1583 301.8
C 0 10 674267 1839.79 1572 1574 365.6
C 4 175 136089 367.89 1572 1574 365.6
C 10 22 93526 251.49 1572 1574 365.6
D 8 195 9956767 25364.55 1562 1532 392.5
D 12 218 1769025 4503.33 1562 1532 392.5
D 12 79 558491 1419.05 1562 1532 392.5

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