ASTROSAT CZTI

Data Quality Report

Orbit 16836

Creation date: 2024-06-27T17:28:26.126204
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/AS1A05_056T01_9000002498_16836cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16836cztM0_level2_quad_clean.evt
Size (bytes)540,230,40093,890,880
Size515.2 MB 89.5 MB
Events in quadrant A3,457,975600,940
Events in quadrant B3,538,427613,260
Events in quadrant C3,759,315577,123
Events in quadrant D5,125,764559,701

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147853
B0148002
C0155352
D0200902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7069841.188287%
B70691011.428774%
C70691201.697553%
D70692453.465837%

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 8000 7071 1 1 0.01% 0.01%
B 8000 7071 1 1 0.01% 0.01%
C 8000 7071 0 0 0.00% 0.00%
D 8000 7071 135 135 1.69% 1.91%

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 9 143 46566 257.33 883 867 177.6
A 15 174 12276 64.24 883 867 177.6
A 0 226 7794 39.01 883 867 177.6
B 0 229 40718 236.81 882 860 168.3
B 15 35 21136 120.46 882 860 168.3
B 12 111 20494 116.65 882 860 168.3
C 3 233 250705 1270.57 843 850 196.6
C 14 238 131153 662.62 843 850 196.6
C 7 247 50122 250.56 843 850 196.6
D 1 52 1760556 8582.21 844 821 205.0
D 5 222 92806 448.61 844 821 205.0
D 10 70 36922 176.06 844 821 205.0

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