ASTROSAT CZTI

Data Quality Report

Orbit 15377

Creation date: 2024-06-27T17:07:34.569380
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/AS1G08_035T01_9000002268_15377cztM0_level2.evt modeM0/AS1G08_035T01_9000002268_15377cztM0_level2_quad_clean.evt
Size (bytes)701,337,600112,916,160
Size668.8 MB 107.7 MB
Events in quadrant A5,163,672715,707
Events in quadrant B5,737,072726,852
Events in quadrant C3,949,700737,084
Events in quadrant D5,817,160652,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211803
B0227482
C0173992
D0233312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84486117.232481%
B84484475.291193%
C8448550.651042%
D84486948.214962%

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 9159 8451 353 353 3.85% 4.18%
B 9158 8450 202 202 2.21% 2.39%
C 9159 8451 0 0 0.00% 0.00%
D 9159 8451 552 552 6.03% 6.53%

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 14 238 1030564 5167.97 976 954 199.2
A 14 237 348031 1742.1 976 954 199.2
A 9 143 18228 86.7 976 954 199.2
B 10 16 940176 4905.3 998 973 191.5
B 10 245 285714 1487.15 998 973 191.5
B 8 3 252104 1311.61 998 973 191.5
C 3 233 128771 562.87 974 977 227.0
C 8 128 11237 45.19 974 977 227.0
C 7 247 7442 28.47 974 977 227.0
D 9 68 1368478 5963.18 931 901 229.3
D 1 255 372607 1620.79 931 901 229.3
D 7 38 178430 774.1 931 901 229.3

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