ASTROSAT CZTI

Data Quality Report

Orbit 33650

Creation date: 2024-06-27T20:51:05.644707
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/AS1T04_076T01_9000004810_33650cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33650cztM0_level2_quad_clean.evt
Size (bytes)583,850,88051,203,520
Size556.8 MB 48.8 MB
Events in quadrant A3,470,535294,425
Events in quadrant B5,104,051290,779
Events in quadrant C3,626,217298,864
Events in quadrant D5,106,738278,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138063
B0187662
C0142692
D0190982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55331933.488162%
B553380414.530996%
C55331172.114585%
D55333606.506416%

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 7206 5534 132 132 1.83% 2.39%
B 7206 5534 673 673 9.34% 12.16%
C 7206 5534 106 106 1.47% 1.92%
D 7206 5534 347 347 4.82% 6.27%

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 15 237 591903 4402.85 667 653 134.3
A 15 169 253171 1880.42 667 653 134.3
A 13 6 22428 162.15 667 653 134.3
B 5 172 2261454 18605.13 634 618 121.5
B 5 200 157990 1295.06 634 618 121.5
B 4 251 29948 241.37 634 618 121.5
C 3 233 380917 2496.41 654 659 152.3
C 0 10 278542 1824.31 654 659 152.3
C 15 214 257531 1686.37 654 659 152.3
D 8 195 982092 5508.55 644 632 178.2
D 2 250 560874 3144.42 644 632 178.2
D 7 223 261389 1463.53 644 632 178.2

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