ASTROSAT CZTI

Data Quality Report

Orbit 17953

Creation date: 2024-06-27T17:43:03.662555
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_025T01_9000002670_17953cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17953cztM0_level2_quad_clean.evt
Size (bytes)556,534,080127,958,400
Size530.8 MB 122.0 MB
Events in quadrant A3,733,943837,898
Events in quadrant B3,784,448859,520
Events in quadrant C4,405,136814,898
Events in quadrant D4,384,613803,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168582
B0168012
C0185752
D0188882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80411061.318244%
B80421251.554340%
C80423914.861975%
D80421802.238249%

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 8711 8043 27 27 0.31% 0.34%
B 8712 8044 3 3 0.03% 0.04%
C 8712 8044 160 160 1.84% 1.99%
D 8712 8044 102 102 1.17% 1.27%

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 15 174 89508 463.71 948 925 191.0
A 0 226 8108 37.6 948 925 191.0
A 3 137 7433 34.07 948 925 191.0
B 12 111 22377 116.64 959 932 183.9
B 11 111 18952 98.01 959 932 183.9
B 14 111 15961 81.74 959 932 183.9
C 9 160 423771 1973.53 914 918 214.3
C 9 176 252180 1172.69 914 918 214.3
C 14 238 141998 658.45 914 918 214.3
D 5 222 802013 3599.43 921 893 222.6
D 7 96 32360 141.38 921 893 222.6
D 2 234 30475 132.91 921 893 222.6

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