ASTROSAT CZTI

Data Quality Report

Orbit 20190510_A05_115T02_9000002906_level2

Creation date: 2025-11-30T03:34:20.044058
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_115T02_9000002906cztM0_level2.fits modeM0/AS1A05_115T02_9000002906cztM0_level2_quad_clean.evt
Size (bytes)649,543,680603,259,200
Size619.5 MB 575.3 MB
Events in quadrant A4,040,5683,638,233
Events in quadrant B3,868,3963,636,985
Events in quadrant C3,858,9443,370,898
Events in quadrant D3,394,0563,113,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01370470
B01389290
C01424370
D01547040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013400
B013400
C013400
D013400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A657638031.221051%
B6576310231.555586%
C6576312301.870353%
D6576312961.970713%

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 76398 65758 0 0 0.00% 0.00%
B 76398 65753 0 0 0.00% 0.00%
C 76398 65758 0 0 0.00% 0.00%
D 76398 65749 0 0 0.00% 0.00%

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 29 3793 10.78 1052 987 260.2
A 7 110 3237 8.65 1052 987 260.2
A 9 19 3015 7.79 1052 987 260.2
B 2 9 3100 10.78 1019 973 197.3
B 2 8 2564 8.06 1019 973 197.3
B 5 128 2557 8.03 1019 973 197.3
C 1 80 2842 7.24 1020 952 261.2
C 1 81 2773 6.97 1020 952 261.2
C 2 191 2665 6.56 1020 952 261.2
D 6 231 2470 6.25 969 883 253.9
D 7 3 2424 6.07 969 883 253.9
D 10 189 2353 5.79 969 883 253.9

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