ASTROSAT CZTI

Data Quality Report

Orbit 16000

Creation date: 2024-06-27T17:16:21.961492
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/AS1T02_090T01_9000002360_16000cztM0_level2.evt modeM0/AS1T02_090T01_9000002360_16000cztM0_level2_quad_clean.evt
Size (bytes)608,443,200101,108,160
Size580.3 MB 96.4 MB
Events in quadrant A5,189,730615,958
Events in quadrant B4,285,684632,631
Events in quadrant C4,122,533610,967
Events in quadrant D4,248,290607,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211663
B0182502
C0177022
D0186052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85613403.971499%
B85611902.219367%
C85611962.289452%
D85611331.553557%

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 9177 8563 145 145 1.58% 1.69%
B 9177 8563 13 13 0.14% 0.15%
C 9177 8563 0 0 0.00% 0.00%
D 9177 8563 43 43 0.47% 0.50%

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 10 253 1124599 5480.54 1011 988 205.0
A 13 210 138984 673.09 1011 988 205.0
A 15 157 26281 123.37 1011 988 205.0
B 7 220 113191 564.17 1029 1001 198.9
B 4 173 30335 147.51 1029 1001 198.9
B 3 209 29339 142.5 1029 1001 198.9
C 14 238 153982 656.79 991 994 232.9
C 3 233 79978 339.08 991 994 232.9
C 8 128 10207 39.55 991 994 232.9
D 7 38 224640 907.1 1006 973 246.6
D 9 85 73557 294.37 1006 973 246.6
D 2 152 70477 281.88 1006 973 246.6

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