ASTROSAT CZTI

Data Quality Report

Orbit 16998

Creation date: 2024-06-27T17:30:28.887217
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_143T01_9000002524_16998cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16998cztM0_level2_quad_clean.evt
Size (bytes)557,856,00082,065,600
Size532.0 MB 78.3 MB
Events in quadrant A3,721,283492,225
Events in quadrant B3,956,854498,693
Events in quadrant C4,097,460481,133
Events in quadrant D4,591,703472,183

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162511
B0166681
C0169811
D0188261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77682353.025232%
B77692473.179302%
C77682533.256952%
D77682973.823378%

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 7899 7770 1 1 0.01% 0.01%
B 7900 7770 7 7 0.09% 0.09%
C 7899 7770 0 0 0.00% 0.00%
D 7899 7770 104 104 1.32% 1.34%

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 12 189 35419 177.4 952 928 194.4
A 15 174 24347 120.45 952 928 194.4
A 0 226 8526 39.08 952 928 194.4
B 7 220 90795 488.17 947 924 184.1
B 0 197 36825 195.01 947 924 184.1
B 0 230 23510 122.68 947 924 184.1
C 3 233 356889 1639.58 917 923 217.1
C 14 238 139241 637.09 917 923 217.1
C 8 128 10239 42.91 917 923 217.1
D 1 52 870233 3809.51 932 906 228.2
D 12 110 89557 388.48 932 906 228.2
D 7 223 69716 301.53 932 906 228.2

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