ASTROSAT CZTI

Data Quality Report

Orbit 15591

Creation date: 2024-06-27T17:10:50.350861
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_037T02_9000002310_15591cztM0_level2.evt modeM0/AS1A04_037T02_9000002310_15591cztM0_level2_quad_clean.evt
Size (bytes)478,595,52074,664,000
Size456.4 MB 71.2 MB
Events in quadrant A3,570,417457,671
Events in quadrant B3,343,834465,443
Events in quadrant C3,263,206444,112
Events in quadrant D3,870,949435,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144462
B0138831
C0136161
D0156171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65711051.597930%
B65711091.658804%
C65711111.689241%
D65712333.545883%

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 7517 6572 1 1 0.01% 0.02%
B 7517 6572 6 6 0.08% 0.09%
C 7517 6572 1 1 0.01% 0.02%
D 7517 6572 153 153 2.04% 2.33%

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 0 253 302771 1806.22 825 807 167.2
A 15 157 76488 452.69 825 807 167.2
A 0 226 7306 38.87 825 807 167.2
B 4 48 62755 400.8 816 795 154.6
B 0 189 21756 135.59 816 795 154.6
B 0 214 21747 135.53 816 795 154.6
C 14 238 121700 662.78 786 789 182.4
C 3 233 72566 393.45 786 789 182.4
C 13 61 5468 25.65 786 789 182.4
D 10 70 217752 1119.12 798 774 193.9
D 5 51 153424 787.33 798 774 193.9
D 2 16 133117 682.59 798 774 193.9

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