ASTROSAT CZTI

Data Quality Report

Orbit 18721

Creation date: 2024-06-27T17:53:57.526733
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/AS1T03_091T01_9000002798_18721cztM0_level2.evt modeM0/AS1T03_091T01_9000002798_18721cztM0_level2_quad_clean.evt
Size (bytes)605,594,880111,844,800
Size577.5 MB 106.7 MB
Events in quadrant A3,635,878741,104
Events in quadrant B6,723,077685,397
Events in quadrant C3,926,160712,429
Events in quadrant D3,524,839704,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161613
B0252493
C0167033
D0161653

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7814560.716662%
B7815101913.039028%
C78151131.445937%
D7815330.422265%

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 8489 7817 10 10 0.12% 0.13%
B 8490 7818 766 766 9.02% 9.80%
C 8490 7818 0 0 0.00% 0.00%
D 8490 7818 1 1 0.01% 0.01%

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 4 2 48968 254.97 925 904 188.5
A 15 192 12456 61.28 925 904 188.5
A 13 254 11698 57.26 925 904 188.5
B 10 245 3178516 18951.58 875 852 167.7
B 7 220 70475 415.23 875 852 167.7
B 12 111 20240 115.63 875 852 167.7
C 3 233 205434 977.47 886 891 209.3
C 14 238 139705 663.37 886 891 209.3
C 9 54 118512 562.09 886 891 209.3
D 7 238 40763 182.67 894 865 218.4
D 10 70 39324 176.08 894 865 218.4
D 2 234 37613 168.25 894 865 218.4

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