ASTROSAT CZTI

Data Quality Report

Orbit 34624

Creation date: 2022-02-23T11:10:50.087534
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/AS1A11_058T02_9000004954_34624cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34624cztM0_level2_quad_clean.evt
Size (bytes)805,530,240100,742,400
Size768.2 MB 96.1 MB
Events in quadrant A4,579,514621,772
Events in quadrant B6,582,318617,743
Events in quadrant C5,107,657597,163
Events in quadrant D7,509,579580,548

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187443
B0250612
C0200142
D0285572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9131110.120469%
B91315686.220567%
C91311281.401818%
D91311962.146534%

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 13077 9133 1 1 0.01% 0.01%
B 13077 9133 376 376 2.88% 4.12%
C 13077 9133 93 93 0.71% 1.02%
D 13077 9133 131 131 1.00% 1.43%

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 10 83 52141 220.01 1162 1141 231.8
A 13 6 20892 85.2 1162 1141 231.8
A 13 254 17125 68.95 1162 1141 231.8
B 5 172 1919545 9205.26 1115 1091 208.4
B 0 189 99048 470.02 1115 1091 208.4
B 10 245 75981 359.34 1115 1091 208.4
C 15 214 377046 1506.47 1095 1107 249.5
C 0 10 336478 1343.9 1095 1107 249.5
C 10 49 58979 231.91 1095 1107 249.5
D 8 195 2363495 8878.96 1106 1075 266.1
D 2 249 335770 1257.92 1106 1075 266.1
D 12 6 132319 493.27 1106 1075 266.1

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