ASTROSAT CZTI

Data Quality Report

Orbit 04241

Creation date: 2024-06-27T14:39:14.218629
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_240T01_9000000536_04241cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04241cztM0_level2_quad_clean.evt
Size (bytes)736,038,72053,907,840
Size701.9 MB 51.4 MB
Events in quadrant A3,099,809320,581
Events in quadrant B3,498,949322,524
Events in quadrant C2,860,656312,923
Events in quadrant D12,423,544253,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128362
B0142921
C0124301
D0410001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60411362.251283%
B60411372.267836%
C6041891.473266%
D6041317752.590631%

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 7301 6041 2 2 0.03% 0.03%
B 7301 6041 15 15 0.21% 0.25%
C 7301 6042 0 0 0.00% 0.00%
D 7301 6042 3190 3190 43.69% 52.80%

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 8 15 95576 615.06 764 749 154.2
A 0 149 37568 238.81 764 749 154.2
A 0 50 11591 70.32 764 749 154.2
B 15 204 183176 1245.9 767 750 146.4
B 3 0 131201 890.93 767 750 146.4
B 7 252 115387 782.93 767 750 146.4
C 10 65 7371 39.36 729 734 168.6
C 9 144 7022 37.29 729 734 168.6
C 13 61 6222 32.55 729 734 168.6
D 2 63 7991565 53113.91 632 616 150.4
D 2 232 1597552 10614.45 632 616 150.4
D 1 52 170262 1127.6 632 616 150.4

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