ASTROSAT CZTI

Data Quality Report

Orbit 13894

Creation date: 2024-06-27T16:47:27.293726
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/AS1A04_010T01_9000002046_13894cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13894cztM0_level2_quad_clean.evt
Size (bytes)494,141,76093,504,960
Size471.3 MB 89.2 MB
Events in quadrant A2,986,374615,075
Events in quadrant B3,080,713620,505
Events in quadrant C3,627,818597,567
Events in quadrant D4,849,009565,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129201
B0131351
C0146421
D0186581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6208260.418814%
B6208350.563789%
C62082113.398840%
D62084717.586985%

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 7425 6211 0 0 0.00% 0.00%
B 7425 6211 7 7 0.09% 0.11%
C 7425 6211 161 161 2.17% 2.59%
D 7425 6211 445 445 5.99% 7.16%

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 1 162 14139 85.11 770 754 157.3
A 0 226 7101 40.36 770 754 157.3
A 12 194 5774 31.92 770 754 157.3
B 10 244 35090 236.49 767 749 145.2
B 4 48 26929 180.29 767 749 145.2
B 12 111 16567 108.93 767 749 145.2
C 3 233 730857 4248.68 742 746 171.8
C 0 207 6150 31.45 742 746 171.8
C 13 61 5267 26.31 742 746 171.8
D 1 52 1623025 9365.18 732 717 173.2
D 8 195 91171 522.17 732 717 173.2
D 13 189 90042 515.65 732 717 173.2

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