ASTROSAT CZTI

Data Quality Report

Orbit 11539

Creation date: 2024-06-27T16:14:28.560146
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_009T01_9000001692_11539cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11539cztM0_level2_quad_clean.evt
Size (bytes)555,958,08089,547,840
Size530.2 MB 85.4 MB
Events in quadrant A4,788,496555,827
Events in quadrant B4,370,379568,562
Events in quadrant C3,062,983571,250
Events in quadrant D4,150,001537,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188812
B0174661
C0140231
D0171871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68653465.040058%
B68653234.705025%
C6865230.335033%
D68652794.064093%

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 7406 6867 163 163 2.20% 2.37%
B 7406 6867 186 186 2.51% 2.71%
C 7406 6867 0 0 0.00% 0.00%
D 7406 6867 225 225 3.04% 3.28%

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 8 5 1326809 8103.7 802 784 163.6
A 1 162 117819 715.23 802 784 163.6
A 1 178 72453 437.99 802 784 163.6
B 4 239 1017268 6514.74 805 786 156.0
B 15 204 141573 902.32 805 786 156.0
B 0 197 33093 207.06 805 786 156.0
C 13 61 5808 27.19 785 791 184.5
C 3 202 1937 6.21 785 791 184.5
C 7 247 1730 5.09 785 791 184.5
D 1 52 489134 2604.06 774 753 187.5
D 10 157 343580 1827.96 774 753 187.5
D 2 120 102372 541.83 774 753 187.5

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