ASTROSAT CZTI

Data Quality Report

Orbit 16723

Creation date: 2024-06-27T17:26:48.283794
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/AS1A05_059T05_9000002478_16723cztM0_level2.evt modeM0/AS1A05_059T05_9000002478_16723cztM0_level2_quad_clean.evt
Size (bytes)648,342,720151,064,640
Size618.3 MB 144.1 MB
Events in quadrant A5,798,668987,890
Events in quadrant B4,293,1401,039,185
Events in quadrant C4,003,399996,056
Events in quadrant D4,975,365973,454

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231713
B0182172
C0174382
D0205092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83227048.459505%
B83221381.658255%
C83221401.682288%
D83221692.030762%

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 8848 8326 456 456 5.15% 5.48%
B 8848 8326 21 21 0.24% 0.25%
C 8848 8326 9 9 0.10% 0.11%
D 8848 8326 85 85 0.96% 1.02%

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 2145134 11221.02 943 921 191.1
A 10 234 17963 89.18 943 921 191.1
A 3 1 11229 53.94 943 921 191.1
B 15 35 199866 1072.35 977 950 185.5
B 4 216 43863 231.34 977 950 185.5
B 5 236 39707 208.94 977 950 185.5
C 14 238 144511 660.46 933 936 217.4
C 0 207 118066 538.81 933 936 217.4
C 3 233 86733 394.68 933 936 217.4
D 2 16 664885 2903.88 939 910 228.7
D 11 176 192111 836.21 939 910 228.7
D 1 52 158870 690.83 939 910 228.7

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