ASTROSAT CZTI

Data Quality Report

Orbit 30406

Creation date: 2024-06-27T20:14:49.055036
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/AS1T04_002T01_9000004374_30406cztM0_level2.evt modeM0/AS1T04_002T01_9000004374_30406cztM0_level2_quad_clean.evt
Size (bytes)786,867,840126,751,680
Size750.4 MB 120.9 MB
Events in quadrant A4,428,992818,682
Events in quadrant B7,719,003814,574
Events in quadrant C5,116,442776,609
Events in quadrant D5,903,555750,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197491
B0300131
C0214141
D0244561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9781370.378284%
B97811031.053062%
C9781116611.921071%
D97814985.091504%

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 10271 9782 0 0 0.00% 0.00%
B 10271 9781 8 8 0.08% 0.08%
C 10271 9782 5 5 0.05% 0.05%
D 10271 9782 429 429 4.18% 4.39%

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 23609 99.33 1136 1112 226.5
A 13 254 17730 73.37 1136 1112 226.5
A 8 192 15773 64.73 1136 1112 226.5
B 6 159 2743545 12714.03 1124 1094 215.7
B 0 229 541692 2506.22 1124 1094 215.7
B 12 111 26947 119.85 1124 1094 215.7
C 14 238 506780 2109.93 1029 1034 239.7
C 14 254 453905 1889.34 1029 1034 239.7
C 3 233 72731 299.11 1029 1034 239.7
D 13 249 900452 3241.71 1055 1035 277.5
D 13 104 363317 1305.75 1055 1035 277.5
D 8 195 211903 760.02 1055 1035 277.5

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