ASTROSAT CZTI

Data Quality Report

Orbit 03258

Creation date: 2024-06-27T14:26:49.459367
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/AS1G05_221T01_9000000442_03258cztM0_level2.evt modeM0/AS1G05_221T01_9000000442_03258cztM0_level2_quad_clean.evt
Size (bytes)450,008,64072,547,200
Size429.2 MB 69.2 MB
Events in quadrant A3,130,610438,534
Events in quadrant B3,431,084444,965
Events in quadrant C3,317,972438,018
Events in quadrant D3,308,123422,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137513
B0142722
C0143162
D0145092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484941.449722%
B64841081.665638%
C6484681.048735%
D64841342.066626%

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 7609 6485 16 16 0.21% 0.25%
B 7609 6485 19 19 0.25% 0.29%
C 7609 6485 9 9 0.12% 0.14%
D 7609 6485 71 71 0.93% 1.09%

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 0 118 150652 981.25 757 742 152.8
A 3 1 29838 190.45 757 742 152.8
A 0 226 21796 137.81 757 742 152.8
B 15 204 313996 2106.74 775 755 148.7
B 5 200 105869 706.96 775 755 148.7
B 12 111 9440 58.41 775 755 148.7
C 1 192 188873 1092.61 746 749 172.2
C 12 175 115752 667.93 746 749 172.2
C 14 223 72049 414.11 746 749 172.2
D 13 223 144659 753.18 728 711 191.1
D 13 114 141909 738.79 728 711 191.1
D 12 233 126061 655.87 728 711 191.1

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