ASTROSAT CZTI

Data Quality Report

Orbit 24360

Creation date: 2024-06-27T19:05:09.921981
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_145T01_9000003594_24360cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24360cztM0_level2_quad_clean.evt
Size (bytes)681,649,920110,583,360
Size650.1 MB 105.5 MB
Events in quadrant A3,279,556750,167
Events in quadrant B3,295,171785,906
Events in quadrant C3,429,505760,930
Events in quadrant D10,218,997617,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136781
B0137681
C0142271
D0347091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212430.692209%
B6211600.966028%
C62111181.899855%
D6211314150.571567%

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 7512 6213 2 2 0.03% 0.03%
B 7511 6212 0 0 0.00% 0.00%
C 7511 6212 0 0 0.00% 0.00%
D 7511 6212 2924 2924 38.93% 47.07%

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 4 2 97221 586.41 824 809 164.4
A 13 254 9966 55.7 824 809 164.4
A 3 137 6985 37.56 824 809 164.4
B 12 111 18545 113.08 839 819 156.8
B 11 111 16265 98.54 839 819 156.8
B 14 111 14558 87.65 839 819 156.8
C 14 238 131209 690.99 820 827 188.7
C 7 247 75002 393.11 820 827 188.7
C 3 233 18827 95.39 820 827 188.7
D 9 35 5656432 34655.72 680 662 163.2
D 7 238 1812797 11103.85 680 662 163.2
D 12 218 76360 463.84 680 662 163.2

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