ASTROSAT CZTI

Data Quality Report

Orbit 30901

Creation date: 2024-06-27T20:20:57.545210
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/AS1C06_004T01_9000004466_30901cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30901cztM0_level2_quad_clean.evt
Size (bytes)563,143,68087,612,480
Size537.1 MB 83.6 MB
Events in quadrant A3,100,876583,164
Events in quadrant B5,279,072569,488
Events in quadrant C3,699,711534,630
Events in quadrant D4,561,936539,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133001
B0201191
C0150661
D0177821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101771.262088%
B61021822.982629%
C61025128.390692%
D61023746.129138%

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 7201 6101 11 11 0.15% 0.18%
B 7202 6102 40 40 0.56% 0.66%
C 7202 6102 18 18 0.25% 0.29%
D 7202 6102 256 256 3.55% 4.20%

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 13 94695 602.35 776 761 155.9
A 13 254 11853 71.13 776 761 155.9
A 0 191 7463 42.98 776 761 155.9
B 6 159 1907139 13111.37 768 751 145.4
B 0 190 228656 1567.44 768 751 145.4
B 4 171 46042 311.49 768 751 145.4
C 3 233 230035 1352.74 727 732 169.5
C 14 238 217255 1277.35 727 732 169.5
C 0 10 185595 1090.57 727 732 169.5
D 8 195 610154 3513.74 739 722 173.4
D 12 218 602187 3467.81 739 722 173.4
D 1 52 209372 1202.99 739 722 173.4

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