ASTROSAT CZTI

Data Quality Report

Orbit 00808

Creation date: 2024-06-27T14:03:13.366408
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/AS1P01_010T01_9000000112_00808cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00808cztM0_level2_quad_clean.evt
Size (bytes)975,611,52099,132,480
Size930.4 MB 94.5 MB
Events in quadrant A7,384,588653,540
Events in quadrant B7,682,072659,027
Events in quadrant C6,989,853633,695
Events in quadrant D7,072,660617,578

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264220
B0273310
C0252990
D0255130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6287410.652139%
B6287250.397646%
C6287190.302211%
D6287781.240655%

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 7457 6288 219 219 2.94% 3.48%
B 7457 6288 190 190 2.55% 3.02%
C 7457 6288 127 127 1.70% 2.02%
D 7457 6288 231 231 3.10% 3.67%

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 15 233 52657 110.96 1904 1919 457.3
A 15 17 11511 20.98 1904 1919 457.3
A 13 17 10136 17.97 1904 1919 457.3
B 0 23 65270 135.75 1987 1997 466.1
B 0 245 19228 36.97 1987 1997 466.1
B 5 176 14974 27.84 1987 1997 466.1
C 15 241 33066 64.19 1754 1811 486.9
C 3 111 30473 58.86 1754 1811 486.9
C 3 79 26954 51.64 1754 1811 486.9
D 13 25 293417 554.4 1708 1771 526.1
D 2 16 86929 161.88 1708 1771 526.1
D 1 4 74255 137.79 1708 1771 526.1

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