ASTROSAT CZTI

Data Quality Report

Orbit 34390

Creation date: 2022-02-06T18:00:44.319429
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_085T01_9000004910_34390cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34390cztM0_level2_quad_clean.evt
Size (bytes)649,886,40086,313,600
Size619.8 MB 82.3 MB
Events in quadrant A2,566,187619,686
Events in quadrant B2,989,236624,920
Events in quadrant C2,822,132618,433
Events in quadrant D10,940,937373,881

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111393
B0123252
C0116912
D0361612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536190.167879%
B5361771.436299%
C5361280.522291%
D5361348965.081142%

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 7124 5362 0 0 0.00% 0.00%
B 7124 5362 37 37 0.52% 0.69%
C 7124 5362 17 17 0.24% 0.32%
D 7124 5362 3298 3298 46.29% 61.51%

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 33448 254.92 651 639 128.7
A 13 254 10021 72.9 651 639 128.7
A 13 6 8129 58.2 651 639 128.7
B 5 172 314060 2563.05 642 626 122.3
B 5 255 66285 536.91 642 626 122.3
B 5 200 37744 303.53 642 626 122.3
C 15 214 224543 1543.93 624 628 145.0
C 0 10 71150 486.26 624 628 145.0
C 14 67 57616 392.94 624 628 145.0
D 7 223 6826932 62366.32 448 435 109.5
D 12 235 856888 7824.49 448 435 109.5
D 2 249 718918 6564.0 448 435 109.5

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