ASTROSAT CZTI

Data Quality Report

Orbit 11363

Creation date: 2024-06-27T16:11:51.021646
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/AS1G08_062T01_9000001660_11363cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11363cztM0_level2_quad_clean.evt
Size (bytes)482,725,44088,096,320
Size460.4 MB 84.0 MB
Events in quadrant A3,167,642569,384
Events in quadrant B4,327,448556,525
Events in quadrant C2,896,460573,451
Events in quadrant D3,807,193535,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135772
B0170191
C0126881
D0154931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6202380.612706%
B62023595.788455%
C620270.112867%
D62021662.676556%

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 7507 6203 0 0 0.00% 0.00%
B 7507 6203 227 227 3.02% 3.66%
C 7507 6203 0 0 0.00% 0.00%
D 7507 6203 122 122 1.63% 1.97%

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 226061 1488.48 749 733 151.4
A 1 162 15368 96.68 749 733 151.4
A 8 15 10606 65.22 749 733 151.4
B 4 239 1015232 7319.99 742 725 138.6
B 3 64 295059 2123.71 742 725 138.6
B 15 204 43317 307.31 742 725 138.6
C 13 61 5364 27.04 741 746 170.8
C 14 67 3302 14.97 741 746 170.8
C 12 4 2767 11.83 741 746 170.8
D 10 253 257160 1492.19 721 704 171.9
D 2 14 244307 1417.4 721 704 171.9
D 2 120 201097 1165.99 721 704 171.9

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