ASTROSAT CZTI

Data Quality Report

Orbit 27560

Creation date: 2024-06-27T19:41:31.071091
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/AS1C05_019T04_9000003956_27560cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27560cztM0_level2_quad_clean.evt
Size (bytes)435,412,800121,032,000
Size415.2 MB 115.4 MB
Events in quadrant A2,908,195832,003
Events in quadrant B3,068,410852,354
Events in quadrant C2,991,412801,815
Events in quadrant D3,820,567770,388

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121670
B0126450
C0124540
D0151550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5860360.614334%
B5860550.938567%
C5860641.092150%
D58601502.559727%

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 7234 5859 0 0 0.00% 0.00%
B 7234 5859 3 3 0.04% 0.05%
C 7234 5859 9 9 0.12% 0.15%
D 7234 5859 104 104 1.44% 1.78%

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 13 254 9797 60.55 752 738 149.6
A 4 2 8251 50.21 752 738 149.6
A 3 137 6590 39.11 752 738 149.6
B 10 245 68183 481.18 751 733 140.2
B 3 64 39991 280.06 751 733 140.2
B 15 32 17774 121.57 751 733 140.2
C 14 238 118718 712.02 716 721 165.7
C 15 208 60834 362.74 716 721 165.7
C 7 221 11539 65.28 716 721 165.7
D 1 52 668171 4037.34 710 692 165.3
D 7 80 175633 1058.16 710 692 165.3
D 12 227 126512 761.04 710 692 165.3

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