ASTROSAT CZTI

Data Quality Report

Orbit 08175

Creation date: 2024-06-27T15:28:55.581060
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/AS1G07_043T01_9000001126_08175cztM0_level2.evt modeM0/AS1G07_043T01_9000001126_08175cztM0_level2_quad_clean.evt
Size (bytes)370,105,92078,782,400
Size353.0 MB 75.1 MB
Events in quadrant A2,674,815496,536
Events in quadrant B2,781,368504,432
Events in quadrant C2,602,549502,384
Events in quadrant D2,756,900478,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117832
B0119821
C0117381
D0121351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5777761.315562%
B5777711.229012%
C5777480.830881%
D5777821.419422%

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 6857 5777 0 0 0.00% 0.00%
B 6857 5777 0 0 0.00% 0.00%
C 6857 5777 1 1 0.01% 0.02%
D 6857 5777 23 23 0.34% 0.40%

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 0 226 6605 41.95 692 676 141.3
A 12 194 6202 39.1 692 676 141.3
A 14 111 6146 38.7 692 676 141.3
B 0 214 29896 224.23 688 673 130.3
B 10 16 19829 146.99 688 673 130.3
B 12 111 13166 95.86 688 673 130.3
C 13 61 5159 29.09 666 668 154.4
C 12 4 3001 15.11 666 668 154.4
C 3 202 1782 7.22 666 668 154.4
D 13 122 67916 406.67 669 647 165.4
D 13 29 64401 385.42 669 647 165.4
D 2 136 28930 170.98 669 647 165.4

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