ASTROSAT CZTI

Data Quality Report

Orbit 35655

Creation date: 2022-05-03T11:18:44.314228
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/AS1C07_001T07_9000005104_35655cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35655cztM0_level2_quad_clean.evt
Size (bytes)710,055,36070,058,880
Size677.2 MB 66.8 MB
Events in quadrant A11,851,411329,457
Events in quadrant B2,674,221485,508
Events in quadrant C2,856,989498,320
Events in quadrant D3,783,458456,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385503
B0113562
C0114702
D0146732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4985477295.727182%
B4985971.945838%
C49851553.109328%
D49854829.669007%

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 7048 4986 4652 4652 66.00% 93.30%
B 7048 4986 57 57 0.81% 1.14%
C 7048 4986 123 123 1.75% 2.47%
D 7048 4986 443 443 6.29% 8.88%

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 15 169 10083384 118553.77 423 416 85.0
A 10 83 106007 1241.52 423 416 85.0
A 12 189 12277 139.46 423 416 85.0
B 5 172 230478 2188.97 555 540 105.0
B 5 255 198734 1886.77 555 540 105.0
B 5 200 47854 450.42 555 540 105.0
C 0 10 433609 3439.63 549 553 125.9
C 15 214 206217 1633.52 549 553 125.9
C 15 208 40479 317.12 549 553 125.9
D 13 249 861446 6772.93 524 510 127.1
D 2 250 424309 3334.0 524 510 127.1
D 12 6 115994 908.51 524 510 127.1

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