ASTROSAT CZTI

Data Quality Report

Orbit 14594

Creation date: 2024-06-27T16:57:17.300573
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/AS1G08_055T02_9000002148_14594cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14594cztM0_level2_quad_clean.evt
Size (bytes)688,055,040103,466,880
Size656.2 MB 98.7 MB
Events in quadrant A7,677,300645,386
Events in quadrant B3,607,944670,699
Events in quadrant C4,206,025658,866
Events in quadrant D4,841,146637,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281233
B0157022
C0172602
D0195532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74772713.624448%
B74771081.444430%
C7477560.748963%
D74775557.422763%

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 7758 7479 4 4 0.05% 0.05%
B 7758 7479 5 5 0.06% 0.07%
C 7758 7479 0 0 0.00% 0.00%
D 7758 7479 386 386 4.98% 5.16%

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 23 3876750 21703.33 885 866 178.6
A 0 226 233681 1303.67 885 866 178.6
A 1 162 76841 425.43 885 866 178.6
B 0 189 46137 263.05 893 870 172.1
B 0 214 21404 119.32 893 870 172.1
B 12 111 20886 116.31 893 870 172.1
C 3 233 793597 3912.32 872 877 202.6
C 13 61 6246 26.5 872 877 202.6
C 8 128 5273 21.7 872 877 202.6
D 10 199 1550155 7723.62 840 820 200.6
D 12 110 57643 283.27 840 820 200.6
D 2 234 24787 119.48 840 820 200.6

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