ASTROSAT CZTI

Data Quality Report

Orbit 26647

Creation date: 2024-06-27T19:31:20.742486
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/AS1A09_145T01_9000003848_26647cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26647cztM0_level2_quad_clean.evt
Size (bytes)480,784,32081,449,280
Size458.5 MB 77.7 MB
Events in quadrant A3,009,914563,429
Events in quadrant B3,047,498567,323
Events in quadrant C2,929,898535,784
Events in quadrant D5,205,063419,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120790
B0122230
C0118150
D0187560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5424510.940265%
B5424551.014012%
C5424691.272124%
D542497617.994100%

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 6699 5425 5 5 0.07% 0.09%
B 6699 5425 0 0 0.00% 0.00%
C 6699 5425 5 5 0.07% 0.09%
D 6699 5424 877 877 13.09% 16.17%

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 88976 585.53 756 745 150.7
A 13 254 8293 50.09 756 745 150.7
A 0 226 6593 38.81 756 745 150.7
B 3 112 64030 452.42 740 725 139.9
B 0 219 42729 300.19 740 725 139.9
B 0 189 31440 219.51 740 725 139.9
C 14 238 117824 708.13 709 717 165.4
C 15 208 35256 208.85 709 717 165.4
C 1 0 6688 36.11 709 717 165.4
D 7 80 2339361 14174.98 615 604 165.0
D 12 233 241300 1458.83 615 604 165.0
D 1 52 227506 1375.23 615 604 165.0

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