ASTROSAT CZTI

Data Quality Report

Orbit 26967

Creation date: 2024-06-27T19:35:03.852162
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_019T03_9000003898_26967cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26967cztM0_level2_quad_clean.evt
Size (bytes)862,499,520115,620,480
Size822.5 MB 110.3 MB
Events in quadrant A11,691,242494,000
Events in quadrant B7,033,269848,380
Events in quadrant C3,118,329888,867
Events in quadrant D3,868,462844,162

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388440
B0249930
C0130590
D0156650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0222
D0221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6034427870.898243%
B6029137422.789849%
C60691111.828967%
D60602383.927393%

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 7763 6043 3641 3641 46.90% 60.25%
B 7764 6038 1040 1040 13.40% 17.22%
C 7764 6101 0 0 0.00% 0.00%
D 7764 6087 165 165 2.13% 2.71%

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 14 235 7745487 84127.73 463 455 92.1
A 6 16 1895408 20583.27 463 455 92.1
A 0 13 238190 2582.31 463 455 92.1
B 0 189 4088995 30327.16 732 716 134.8
B 0 230 29923 216.66 732 716 134.8
B 5 172 26629 192.22 732 716 134.8
C 14 238 124670 715.38 754 761 173.2
C 15 208 27025 151.63 754 761 173.2
C 8 128 9317 49.4 754 761 173.2
D 1 52 787886 4529.12 740 723 173.8
D 2 250 193288 1107.97 740 723 173.8
D 12 233 32728 184.15 740 723 173.8

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