ASTROSAT CZTI

Data Quality Report

Orbit 20969

Creation date: 2024-06-27T18:21:54.208839
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/AS1T03_131T01_9000003090_20969cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20969cztM0_level2_quad_clean.evt
Size (bytes)447,390,72089,965,440
Size426.7 MB 85.8 MB
Events in quadrant A3,027,084577,228
Events in quadrant B3,242,618591,407
Events in quadrant C3,058,555568,566
Events in quadrant D3,782,771537,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132252
B0136932
C0132162
D0157592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451260.403038%
B6451340.527050%
C6451400.620059%
D64501772.744186%

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 7521 6452 0 0 0.00% 0.00%
B 7521 6452 2 2 0.03% 0.03%
C 7521 6452 0 0 0.00% 0.00%
D 7520 6451 131 131 1.74% 2.03%

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 6901 38.4 785 769 159.7
A 3 137 6483 35.78 785 769 159.7
A 12 194 5625 30.41 785 769 159.7
B 0 189 58490 376.99 789 770 153.1
B 0 190 36007 230.15 789 770 153.1
B 3 64 29936 190.5 789 770 153.1
C 14 238 118698 668.79 751 755 176.4
C 7 247 11303 59.81 751 755 176.4
C 13 61 5231 25.38 751 755 176.4
D 9 1 433336 2371.94 747 724 182.4
D 1 52 385001 2106.93 747 724 182.4
D 7 223 31821 170.5 747 724 182.4

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