ASTROSAT CZTI

Data Quality Report

Orbit 21510

Creation date: 2024-06-27T18:28:47.038579
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/AS1T03_141T01_9000003174_21510cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21510cztM0_level2_quad_clean.evt
Size (bytes)507,502,08096,638,400
Size484.0 MB 92.2 MB
Events in quadrant A3,378,477629,164
Events in quadrant B3,528,372640,091
Events in quadrant C3,419,138623,923
Events in quadrant D4,620,695598,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137340
B0143220
C0140160
D0178210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62401151.842949%
B62401362.179487%
C62401943.108974%
D62403235.176282%

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 7530 6241 0 0 0.00% 0.00%
B 7530 6241 2 2 0.03% 0.03%
C 7530 6241 0 0 0.00% 0.00%
D 7530 6241 173 173 2.30% 2.77%

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 10008 52.48 877 862 174.3
A 0 226 7557 38.42 877 862 174.3
A 3 137 6569 32.75 877 862 174.3
B 0 230 70170 432.7 866 847 160.2
B 0 190 34247 208.48 866 847 160.2
B 3 64 20734 124.13 866 847 160.2
C 14 238 134740 696.21 841 851 192.3
C 13 61 5939 26.46 841 851 192.3
C 7 220 2318 7.63 841 851 192.3
D 13 174 667838 3315.71 847 823 201.2
D 1 52 371160 1840.94 847 823 201.2
D 14 35 205326 1016.58 847 823 201.2

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