ASTROSAT CZTI

Data Quality Report

Orbit 00616

Creation date: 2024-06-27T14:00:37.632970
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/AS1P01_116T01_9000000086_00616cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00616cztM0_level2_quad_clean.evt
Size (bytes)788,777,28073,416,960
Size752.2 MB 70.0 MB
Events in quadrant A5,967,601473,883
Events in quadrant B6,723,091462,420
Events in quadrant C5,380,309469,553
Events in quadrant D5,476,094458,272

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213793
B0236072
C0196492
D0199482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512340.078079%
B51232314.509077%
C512310.019520%
D5123300.585594%

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 7278 5124 112 112 1.54% 2.19%
B 7278 5123 379 379 5.21% 7.40%
C 7278 5124 32 32 0.44% 0.62%
D 7278 5124 108 108 1.48% 2.11%

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 0 238 53031 151.76 1502 1487 339.6
A 0 69 51807 148.16 1502 1487 339.6
A 13 160 16751 44.94 1502 1487 339.6
B 5 191 658434 1858.49 1489 1501 353.5
B 0 220 174054 488.16 1489 1501 353.5
B 7 221 65480 181.0 1489 1501 353.5
C 15 241 43612 110.93 1356 1406 380.5
C 5 249 5413 10.53 1356 1406 380.5
C 9 206 5215 10.01 1356 1406 380.5
D 13 221 254742 625.19 1290 1339 405.3
D 13 252 46183 110.64 1290 1339 405.3
D 13 101 42520 101.6 1290 1339 405.3

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