ASTROSAT CZTI

Data Quality Report

Orbit 23407

Creation date: 2024-06-27T18:53:58.013185
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/AS1A07_127T02_9000003460_23407cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23407cztM0_level2_quad_clean.evt
Size (bytes)492,727,68093,536,640
Size469.9 MB 89.2 MB
Events in quadrant A4,927,820603,815
Events in quadrant B3,209,643631,277
Events in quadrant C3,064,075588,688
Events in quadrant D3,310,055586,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185271
B0131731
C0127011
D0135881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60564938.140687%
B60561061.750330%
C6057951.568433%
D6057931.535414%

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 7251 6056 371 371 5.12% 6.13%
B 7251 6057 3 3 0.04% 0.05%
C 7252 6058 5 5 0.07% 0.08%
D 7252 6058 44 44 0.61% 0.73%

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 6 16 1915299 12325.0 782 767 155.3
A 13 254 9893 58.75 782 767 155.3
A 0 226 6758 38.57 782 767 155.3
B 0 189 97102 654.09 784 767 147.3
B 0 190 34030 225.85 784 767 147.3
B 12 111 17448 113.26 784 767 147.3
C 14 238 119553 687.56 744 750 172.8
C 0 10 30971 174.9 744 750 172.8
C 7 247 5966 30.19 744 750 172.8
D 1 52 324022 1783.18 766 747 181.3
D 9 85 33867 182.69 766 747 181.3
D 12 227 24416 130.56 766 747 181.3

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