ASTROSAT CZTI

Data Quality Report

Orbit 18532

Creation date: 2024-06-27T17:51:05.493054
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_187T03_9000002748_18532cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18532cztM0_level2_quad_clean.evt
Size (bytes)664,300,800100,457,280
Size633.5 MB 95.8 MB
Events in quadrant A4,133,018632,899
Events in quadrant B4,230,559642,576
Events in quadrant C4,341,289616,608
Events in quadrant D6,854,025575,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177173
B0179112
C0182812
D0261002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82591391.683012%
B82592152.603221%
C82591802.179441%
D82605817.033898%

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 8754 8260 0 0 0.00% 0.00%
B 8754 8260 14 14 0.16% 0.17%
C 8754 8261 14 14 0.16% 0.17%
D 8755 8262 407 407 4.65% 4.93%

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 13 90834 430.43 1021 997 208.7
A 15 174 70139 331.28 1021 997 208.7
A 15 192 25686 118.29 1021 997 208.7
B 7 220 142111 701.1 1022 993 201.3
B 0 197 25031 119.42 1022 993 201.3
B 12 111 24287 115.73 1022 993 201.3
C 3 233 194680 831.76 980 986 232.9
C 0 207 160845 686.46 980 986 232.9
C 14 238 150062 640.16 980 986 232.9
D 13 168 1851064 7762.9 968 937 238.3
D 1 52 690621 2893.83 968 937 238.3
D 15 0 342127 1431.59 968 937 238.3

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