ASTROSAT CZTI

Data Quality Report

Orbit 37243

Creation date: 2024-06-27T21:37:21.018684
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/AS1A10_123T11_9000005286_37243cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37243cztM0_level2_quad_clean.evt
Size (bytes)153,031,68032,679,360
Size145.9 MB 31.2 MB
Events in quadrant A974,866226,362
Events in quadrant B1,374,483208,244
Events in quadrant C866,548221,110
Events in quadrant D1,301,643209,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320508
B05858567
C03720227
D05345405

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134
B0166
C0122
D0101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371
B0383
C0393
D0393

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1688251.481043%
B16801649.761905%
C169810.058893%
D1687613.615886%

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 1772 1700 18 18 1.02% 1.06%
B 1763 1695 92 92 5.22% 5.43%
C 1772 1706 0 0 0.00% 0.00%
D 1770 1699 58 58 3.28% 3.41%

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 10 83 58683 1352.31 202 198 43.2
A 9 143 44987 1035.63 202 198 43.2
A 13 248 42631 981.15 202 198 43.2
B 12 18 335611 8920.36 187 183 37.6
B 0 230 91573 2430.42 187 183 37.6
B 0 213 57955 1536.39 187 183 37.6
C 15 214 71214 1488.6 198 199 47.7
C 14 254 12549 258.88 198 199 47.7
C 8 79 3858 76.7 198 199 47.7
D 13 171 201844 4022.56 198 192 50.1
D 2 249 88461 1760.79 198 192 50.1
D 13 249 84439 1680.56 198 192 50.1

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