ASTROSAT CZTI

Data Quality Report

Orbit 19946

Creation date: 2024-06-27T18:09:05.131997
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/AS1A05_160T01_9000002970_19946cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19946cztM0_level2_quad_clean.evt
Size (bytes)516,257,28073,082,880
Size492.3 MB 69.7 MB
Events in quadrant A3,437,899468,962
Events in quadrant B3,234,217468,258
Events in quadrant C3,547,921442,864
Events in quadrant D5,035,588441,800

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137601
B0131671
C0142431
D0185385

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55891963.506889%
B55901262.254025%
C55901893.381038%
D558992016.460905%

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 6929 5589 84 84 1.21% 1.50%
B 6930 5590 21 21 0.30% 0.38%
C 6930 5590 34 34 0.49% 0.61%
D 6929 5589 832 832 12.01% 14.89%

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 447543 2888.94 778 766 154.7
A 0 226 6779 38.88 778 766 154.7
A 3 137 5623 31.41 778 766 154.7
B 7 220 115928 787.23 777 762 146.3
B 0 197 35274 235.91 777 762 146.3
B 0 190 30205 201.26 777 762 146.3
C 4 254 266189 1543.37 750 759 172.0
C 14 238 118862 686.72 750 759 172.0
C 3 233 117979 681.59 750 759 172.0
D 1 20 1802507 10250.63 726 707 175.8
D 1 52 409515 2325.75 726 707 175.8
D 2 184 60238 338.68 726 707 175.8

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