ASTROSAT CZTI

Data Quality Report

Orbit 30258

Creation date: 2024-06-27T20:12:48.604096
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/AS1A10_007T01_9000004350_30258cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30258cztM0_level2_quad_clean.evt
Size (bytes)1,064,920,32080,971,200
Size1015.6 MB 77.2 MB
Events in quadrant A4,969,124531,421
Events in quadrant B18,217,319275,143
Events in quadrant C4,007,273553,561
Events in quadrant D4,530,656547,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197581
B0593351
C0167121
D0182113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78025216.677775%
B7802730193.578570%
C78022443.127403%
D78011892.422766%

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 7937 7803 307 307 3.87% 3.93%
B 7936 7801 6412 6412 80.80% 82.19%
C 7937 7804 0 0 0.00% 0.00%
D 7936 7803 66 66 0.83% 0.85%

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 14 239 1309415 6856.0 945 924 190.9
A 13 254 13880 67.88 945 924 190.9
A 8 192 12250 59.34 945 924 190.9
B 6 36 15429804 179140.84 435 424 86.1
B 6 159 1054163 12234.3 435 424 86.1
B 12 111 10041 111.65 435 424 86.1
C 14 238 176327 803.42 927 933 218.3
C 15 208 127164 578.22 927 933 218.3
C 14 254 43166 193.45 927 933 218.3
D 8 195 390309 1750.55 937 918 222.4
D 13 249 263340 1179.75 937 918 222.4
D 1 52 129839 579.58 937 918 222.4

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