ASTROSAT CZTI

Data Quality Report

Orbit 04308

Creation date: 2024-06-27T14:40:11.779817
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/AS1G05_219T01_9000000540_04308cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04308cztM0_level2_quad_clean.evt
Size (bytes)490,360,32069,010,560
Size467.6 MB 65.8 MB
Events in quadrant A3,637,049403,371
Events in quadrant B3,999,454400,577
Events in quadrant C3,224,354399,672
Events in quadrant D3,505,108389,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154673
B0164272
C0146922
D0154972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71201181.657303%
B71202343.286517%
C7120700.983146%
D7120831.165730%

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 8835 7120 10 10 0.11% 0.14%
B 8835 7120 114 114 1.29% 1.60%
C 8835 7120 0 0 0.00% 0.00%
D 8835 7120 9 9 0.10% 0.13%

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 13 251 301958 1755.28 838 820 171.6
A 15 234 33656 191.4 838 820 171.6
A 13 14 27102 153.19 838 820 171.6
B 5 184 316144 1923.45 841 821 163.9
B 15 204 208554 1267.16 841 821 163.9
B 14 167 122570 742.66 841 821 163.9
C 9 54 45178 232.49 811 815 190.8
C 10 65 7479 34.92 811 815 190.8
C 9 247 7069 32.77 811 815 190.8
D 13 53 172038 875.33 807 784 195.6
D 2 136 65348 330.0 807 784 195.6
D 13 239 55720 280.79 807 784 195.6

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