ASTROSAT CZTI

Data Quality Report

Orbit 17041

Creation date: 2024-06-27T17:31:13.808640
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_038T01_9000002530_17041cztM0_level2.evt modeM0/AS1T03_038T01_9000002530_17041cztM0_level2_quad_clean.evt
Size (bytes)593,867,520115,842,240
Size566.4 MB 110.5 MB
Events in quadrant A3,968,546761,469
Events in quadrant B3,571,114781,136
Events in quadrant C5,739,566724,672
Events in quadrant D4,203,071724,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168592
B0155492
C0222862
D0177302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74211822.452500%
B74221091.468607%
C74223204.311506%
D74223845.173808%

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 7482 7424 68 68 0.91% 0.92%
B 7483 7425 2 2 0.03% 0.03%
C 7483 7425 2 2 0.03% 0.03%
D 7483 7425 208 208 2.78% 2.80%

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 15 174 620349 3524.64 866 847 175.8
A 12 189 14498 77.67 866 847 175.8
A 0 226 7543 38.1 866 847 175.8
B 0 189 46951 275.22 866 842 167.5
B 0 197 32166 186.97 866 842 167.5
B 6 36 30898 179.4 866 842 167.5
C 3 233 2419358 12606.41 818 820 191.8
C 14 238 125547 650.13 818 820 191.8
C 13 61 5888 26.42 818 820 191.8
D 1 52 836034 4181.52 828 801 199.7
D 10 70 180722 900.76 828 801 199.7
D 2 234 29736 144.86 828 801 199.7

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