ASTROSAT CZTI

Data Quality Report

Orbit 23303

Creation date: 2024-06-27T18:52:33.257647
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/AS1A07_148T02_9000003444_23303cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23303cztM0_level2_quad_clean.evt
Size (bytes)514,465,92071,458,560
Size490.6 MB 68.1 MB
Events in quadrant A3,353,491444,153
Events in quadrant B3,403,693447,509
Events in quadrant C3,521,163425,737
Events in quadrant D4,881,716413,112

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136321
B0137891
C0141441
D0185951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6203671.080123%
B6204631.015474%
C62041031.660219%
D62044647.479046%

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 7478 6203 0 0 0.00% 0.00%
B 7479 6204 0 0 0.00% 0.00%
C 7479 6204 0 0 0.00% 0.00%
D 7479 6204 359 359 4.80% 5.79%

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 9517 50.15 870 852 172.8
A 0 226 7666 39.44 870 852 172.8
A 3 137 6806 34.46 870 852 172.8
B 0 229 26183 158.35 856 837 160.1
B 0 230 25515 154.18 856 837 160.1
B 12 111 18057 107.58 856 837 160.1
C 14 238 134949 702.09 829 840 191.0
C 10 9 129766 674.96 829 840 191.0
C 0 239 7674 35.78 829 840 191.0
D 1 52 1126326 5692.61 829 810 197.7
D 7 238 365708 1845.57 829 810 197.7
D 1 239 137938 693.56 829 810 197.7

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