ASTROSAT CZTI

Data Quality Report

Orbit 00150

Creation date: 2024-06-27T13:57:03.531638
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/AS1P01_120T01_9000000006_00150cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00150cztM0_level2_quad_clean.evt
Size (bytes)692,481,60039,559,680
Size660.4 MB 37.7 MB
Events in quadrant A5,111,353229,237
Events in quadrant B5,134,327232,670
Events in quadrant C4,738,609229,761
Events in quadrant D5,722,658224,328

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180002
B0180651
C0168971
D0198111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A398660.150527%
B3986461.154039%
C398640.100351%
D3986481.204215%

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 5577 3988 135 135 2.42% 3.39%
B 5577 3988 175 175 3.14% 4.39%
C 5577 3988 82 82 1.47% 2.06%
D 5577 3988 371 371 6.65% 9.30%

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 14 10 58766 277.39 1283 1255 207.3
A 13 146 22966 104.72 1283 1255 207.3
A 0 166 9799 41.21 1283 1255 207.3
B 0 170 85000 299.75 1243 1246 279.4
B 10 48 66476 233.45 1243 1246 279.4
B 10 199 48056 167.53 1243 1246 279.4
C 0 188 108376 333.49 1132 1170 321.5
C 0 218 72560 222.08 1132 1170 321.5
C 9 128 38661 116.62 1132 1170 321.5
D 0 243 303909 1006.26 1223 1221 300.8
D 2 70 269240 891.01 1223 1221 300.8
D 13 222 148658 490.14 1223 1221 300.8

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