ASTROSAT CZTI

Data Quality Report

Orbit 11202

Creation date: 2024-06-27T16:09:39.938281
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/AS1A04_171T01_9000001634_11202cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11202cztM0_level2_quad_clean.evt
Size (bytes)868,806,720113,595,840
Size828.6 MB 108.3 MB
Events in quadrant A7,302,183687,045
Events in quadrant B5,652,363732,161
Events in quadrant C4,433,304721,192
Events in quadrant D8,277,287635,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281483
B0230262
C0195296
D03121927

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251
B0250
C0250
D0251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95715525.767422%
B95753113.248042%
C9574110.114895%
D9571117312.255773%

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 12132 9574 332 332 2.74% 3.47%
B 12135 9577 131 131 1.08% 1.37%
C 12135 9577 0 0 0.00% 0.00%
D 12132 9574 941 941 7.76% 9.83%

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 15 239 1034741 4550.08 1123 1099 227.2
A 8 5 908474 3994.26 1123 1099 227.2
A 8 15 787871 3463.36 1123 1099 227.2
B 4 239 839634 3850.67 1158 1129 217.8
B 15 204 75081 339.61 1158 1129 217.8
B 3 189 59780 269.34 1158 1129 217.8
C 13 61 8274 27.36 1135 1143 260.7
C 7 222 5104 15.2 1135 1143 260.7
C 14 234 3880 10.5 1135 1143 260.7
D 1 52 2908645 11730.78 1042 1015 247.9
D 13 152 444255 1788.24 1042 1015 247.9
D 10 253 285500 1147.75 1042 1015 247.9

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