ASTROSAT CZTI

Data Quality Report

Orbit 24401

Creation date: 2024-06-27T19:05:35.609615
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/AS1A08_008T01_9000003596_24401cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24401cztM0_level2_quad_clean.evt
Size (bytes)107,700,48029,805,120
Size102.7 MB 28.4 MB
Events in quadrant A735,612203,397
Events in quadrant B737,736206,792
Events in quadrant C896,814191,588
Events in quadrant D789,859192,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030350
B030400
C036190
D032280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145830.205761%
B145930.205620%
C1459171.165182%
D145940.274160%

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 1458 1458 0 0 0.00% 0.00%
B 1459 1459 0 0 0.00% 0.00%
C 1459 1459 5 5 0.34% 0.34%
D 1459 1459 3 3 0.21% 0.21%

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 2638 61.41 190 187 39.9
A 0 226 1677 37.33 190 187 39.9
A 3 137 1665 37.03 190 187 39.9
B 0 190 6262 160.21 186 182 38.0
B 12 111 4138 104.24 186 182 38.0
B 11 111 3853 96.73 186 182 38.0
C 7 247 182262 4266.31 175 176 42.7
C 14 238 27887 649.27 175 176 42.7
C 13 61 1283 25.94 175 176 42.7
D 1 52 74794 1580.69 184 178 47.2
D 8 195 10296 214.34 184 178 47.2
D 2 249 9739 202.54 184 178 47.2

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