ASTROSAT CZTI

Data Quality Report

Orbit 23042

Creation date: 2024-06-27T18:49:09.050887
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/AS1C05_004T01_9000003404_23042cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23042cztM0_level2_quad_clean.evt
Size (bytes)446,639,040112,985,280
Size425.9 MB 107.8 MB
Events in quadrant A3,052,577747,209
Events in quadrant B3,295,956775,275
Events in quadrant C3,248,470747,742
Events in quadrant D3,507,443718,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131262
B0138292
C0136742
D0146842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6220150.241158%
B6220600.964630%
C6220821.318328%
D6220671.077170%

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 7540 6221 0 0 0.00% 0.00%
B 7540 6221 32 32 0.42% 0.51%
C 7540 6221 9 9 0.12% 0.14%
D 7540 6221 35 35 0.46% 0.56%

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 13 254 9155 53.34 789 775 157.1
A 0 226 6958 39.36 789 775 157.1
A 3 137 6495 36.41 789 775 157.1
B 4 216 114380 777.81 796 778 146.1
B 5 172 18483 121.22 796 778 146.1
B 3 64 17072 111.56 796 778 146.1
C 14 238 123591 679.37 782 789 180.8
C 0 10 53645 292.41 782 789 180.8
C 0 207 12690 65.84 782 789 180.8
D 1 52 312555 1661.23 782 760 187.7
D 12 227 83928 443.12 782 760 187.7
D 13 153 47625 249.69 782 760 187.7

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