ASTROSAT CZTI

Data Quality Report

Orbit 08642

Creation date: 2024-06-27T15:35:21.204661
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/AS1G07_024T01_9000001206_08642cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08642cztM0_level2_quad_clean.evt
Size (bytes)449,182,080119,018,880
Size428.4 MB 113.5 MB
Events in quadrant A2,814,306787,925
Events in quadrant B4,282,416801,444
Events in quadrant C3,053,820804,836
Events in quadrant D3,020,759766,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130225
B0170982
C0136682
D0137486

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361250.393020%
B63623215.045583%
C6362641.005973%
D6360440.691824%

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 7572 6362 6 6 0.08% 0.09%
B 7572 6363 208 208 2.75% 3.27%
C 7572 6363 33 33 0.44% 0.52%
D 7572 6363 21 21 0.28% 0.33%

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 37113 250.47 716 702 145.4
A 8 5 8808 55.76 716 702 145.4
A 5 168 7643 47.75 716 702 145.4
B 5 143 781226 5776.59 723 704 135.1
B 0 228 471523 3484.5 723 704 135.1
B 0 219 139652 1028.34 723 704 135.1
C 4 254 257485 1576.44 709 712 162.9
C 14 67 23401 139.3 709 712 162.9
C 13 61 5509 29.45 709 712 162.9
D 10 253 120473 706.93 699 678 169.5
D 12 233 118876 697.5 699 678 169.5
D 1 52 36030 208.62 699 678 169.5

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