ASTROSAT CZTI

Data Quality Report

Orbit 36887

Creation date: 2024-06-27T21:32:50.770628
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_075T01_9000005244_36887cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36887cztM0_level2_quad_clean.evt
Size (bytes)364,014,72054,855,360
Size347.2 MB 52.3 MB
Events in quadrant A2,821,802419,640
Events in quadrant B848,0717,852
Events in quadrant C3,052,099428,661
Events in quadrant D3,916,982412,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121583
B056492
C0126552
D0156972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5575480.860987%
B55755575100.000000%
C5575881.578475%
D55752604.663677%

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 7248 5576 35 35 0.48% 0.63%
B 7247 5574 0 0 0.00% 0.00%
C 7248 5576 70 70 0.97% 1.26%
D 7248 5576 187 187 2.58% 3.35%

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 10 83 236717 1930.56 602 590 122.3
A 9 143 182153 1484.45 602 590 122.3
A 13 248 20721 164.59 602 590 122.3
B 12 243 773870 177399.54 12 12 4.4
B 12 144 14218 3256.59 12 12 4.4
B 0 229 2323 529.77 12 12 4.4
C 0 10 372852 2754.18 585 589 135.2
C 15 214 240901 1777.94 585 589 135.2
C 0 207 135858 1000.78 585 589 135.2
D 12 235 959218 6758.83 578 562 141.8
D 12 233 231386 1627.38 578 562 141.8
D 13 249 147051 1032.79 578 562 141.8

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