ASTROSAT CZTI

Data Quality Report

Orbit 26516

Creation date: 2024-06-27T19:29:56.840445
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/AS1C05_019T04_9000003838_26516cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26516cztM0_level2_quad_clean.evt
Size (bytes)632,283,840107,354,880
Size603.0 MB 102.4 MB
Events in quadrant A2,888,577776,538
Events in quadrant B5,469,396739,828
Events in quadrant C3,067,509741,022
Events in quadrant D7,338,040594,717

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122900
B0203140
C0126230
D0256070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5699480.842253%
B56993045.334269%
C5699771.351114%
D5699166929.285840%

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 6949 5699 0 0 0.00% 0.00%
B 6949 5700 199 199 2.86% 3.49%
C 6949 5699 3 3 0.04% 0.05%
D 6948 5698 1425 1425 20.51% 25.01%

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 0 13 26539 177.6 741 729 145.3
A 13 254 9538 60.62 741 729 145.3
A 0 226 6482 39.59 741 729 145.3
B 7 205 1460820 11225.27 714 698 130.1
B 0 189 1018880 7827.68 714 698 130.1
B 5 172 82029 625.26 714 698 130.1
C 3 233 145014 879.69 712 718 164.0
C 14 238 114073 691.06 712 718 164.0
C 14 176 15828 92.12 712 718 164.0
D 7 80 4047180 27413.9 618 605 147.6
D 1 52 861718 5833.69 618 605 147.6
D 2 234 23918 157.94 618 605 147.6

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