ASTROSAT CZTI

Data Quality Report

Orbit 15374

Creation date: 2024-06-27T17:07:30.782819
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/AS1A04_049T01_9000002266_15374cztM0_level2.evt modeM0/AS1A04_049T01_9000002266_15374cztM0_level2_quad_clean.evt
Size (bytes)511,447,680102,323,520
Size487.8 MB 97.6 MB
Events in quadrant A3,381,084667,251
Events in quadrant B3,347,484676,056
Events in quadrant C5,063,125658,905
Events in quadrant D3,253,911640,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145023
B0143192
C0194432
D0143222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6544991.512836%
B6544540.825183%
C65441732.643643%
D6544390.595966%

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 7500 6546 44 44 0.59% 0.67%
B 7500 6546 15 15 0.20% 0.23%
C 7500 6546 36 36 0.48% 0.55%
D 7500 6546 19 19 0.25% 0.29%

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 14 238 207581 1312.48 780 763 157.6
A 14 237 133082 839.7 780 763 157.6
A 15 239 17239 104.56 780 763 157.6
B 4 142 75475 507.82 785 766 147.1
B 8 3 54865 367.73 785 766 147.1
B 4 173 39224 261.41 785 766 147.1
C 3 233 2096066 12113.02 760 764 173.0
C 13 61 5348 26.5 760 764 173.0
C 4 112 3031 13.11 760 764 173.0
D 5 222 110989 587.37 766 744 187.7
D 6 112 39110 204.41 766 744 187.7
D 7 38 37803 197.44 766 744 187.7

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