ASTROSAT CZTI

Data Quality Report

Orbit 18458

Creation date: 2024-06-27T17:50:18.171304
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_144T02_9000002734_18458cztM0_level2.evt modeM0/AS1A05_144T02_9000002734_18458cztM0_level2_quad_clean.evt
Size (bytes)531,169,92098,136,000
Size506.6 MB 93.6 MB
Events in quadrant A3,769,130616,688
Events in quadrant B4,075,069638,845
Events in quadrant C3,558,413604,109
Events in quadrant D4,171,590587,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164732
B0170622
C0156582
D0176472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75421361.803235%
B75432343.102214%
C75431331.763224%
D75421021.352426%

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 9082 7543 36 36 0.40% 0.48%
B 9083 7543 51 51 0.56% 0.68%
C 9083 7545 0 0 0.00% 0.00%
D 9082 7544 18 18 0.20% 0.24%

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 13 260971 1442.53 890 870 180.3
A 14 238 49729 270.97 890 870 180.3
A 4 2 20668 109.8 890 870 180.3
B 10 245 393483 2310.58 901 880 169.9
B 7 220 115568 674.97 901 880 169.9
B 0 245 29369 167.67 901 880 169.9
C 14 238 135101 669.01 866 868 200.6
C 9 54 28091 135.68 866 868 200.6
C 3 233 21846 104.55 866 868 200.6
D 13 168 300686 1426.06 869 843 210.3
D 7 238 171906 813.58 869 843 210.3
D 1 52 148670 703.07 869 843 210.3

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