ASTROSAT CZTI

Data Quality Report

Orbit 33830

Creation date: 2024-06-27T20:53:09.780558
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/AS1A11_106T03_9000004826_33830cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33830cztM0_level2_quad_clean.evt
Size (bytes)486,789,12071,225,280
Size464.2 MB 67.9 MB
Events in quadrant A3,365,841444,811
Events in quadrant B3,425,479457,855
Events in quadrant C3,282,720468,010
Events in quadrant D4,335,135440,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131103
B0133232
C0130872
D0162322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49143376.857957%
B49142605.291005%
C4914871.770452%
D49141833.724054%

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 7036 4915 308 308 4.38% 6.27%
B 7036 4915 174 174 2.47% 3.54%
C 7036 4915 61 61 0.87% 1.24%
D 7036 4915 176 176 2.50% 3.58%

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 15 169 1006797 8377.24 602 592 120.1
A 13 6 17839 143.59 602 592 120.1
A 10 83 11463 90.51 602 592 120.1
B 5 172 780565 6900.51 606 593 113.0
B 0 229 129630 1141.61 606 593 113.0
B 0 213 25745 222.52 606 593 113.0
C 3 233 278167 2027.5 604 609 136.9
C 15 214 210585 1533.83 604 609 136.9
C 0 10 183010 1332.4 604 609 136.9
D 8 195 960604 5931.71 596 586 161.8
D 2 250 290355 1790.41 596 586 161.8
D 12 6 255016 1572.06 596 586 161.8

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