ASTROSAT CZTI

Data Quality Report

Orbit 28375

Creation date: 2024-06-27T19:51:06.916928
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/AS1A10_101T02_9000004084_28375cztM0_level2.evt modeM0/AS1A10_101T02_9000004084_28375cztM0_level2_quad_clean.evt
Size (bytes)532,198,08077,820,480
Size507.5 MB 74.2 MB
Events in quadrant A3,637,710467,257
Events in quadrant B3,931,175472,457
Events in quadrant C3,685,559453,555
Events in quadrant D4,355,227442,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156070
B0162790
C0156540
D0179580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74862112.818595%
B74862643.526583%
C74872413.218913%
D74871471.963403%

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 7561 7487 0 0 0.00% 0.00%
B 7561 7487 2 2 0.03% 0.03%
C 7562 7488 0 0 0.00% 0.00%
D 7562 7488 26 26 0.34% 0.35%

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 13 254 12525 60.75 938 916 191.1
A 6 16 11748 56.68 938 916 191.1
A 3 137 9702 45.97 938 916 191.1
B 10 245 230729 1251.56 934 908 183.6
B 12 111 23281 121.84 934 908 183.6
B 11 111 21179 110.39 934 908 183.6
C 14 238 142757 661.69 903 906 214.4
C 7 220 20073 89.41 903 906 214.4
C 13 61 6149 24.46 903 906 214.4
D 8 195 699086 3163.2 913 887 220.7
D 1 52 104005 467.18 913 887 220.7
D 2 250 38103 168.61 913 887 220.7

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