ASTROSAT CZTI

Data Quality Report

Orbit 24753

Creation date: 2024-06-27T19:09:29.617408
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/AS1A07_018T08_9000003622_24753cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24753cztM0_level2_quad_clean.evt
Size (bytes)464,077,44090,034,560
Size442.6 MB 85.9 MB
Events in quadrant A3,235,308589,863
Events in quadrant B3,393,938587,827
Events in quadrant C3,232,776559,636
Events in quadrant D3,769,668554,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130342
B0135292
C0130362
D0151042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231641.027122%
B6231921.476489%
C6231871.396245%
D6231410.658000%

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 7496 6232 0 0 0.00% 0.00%
B 7496 6232 20 20 0.27% 0.32%
C 7496 6232 2 2 0.03% 0.03%
D 7496 6232 9 9 0.12% 0.14%

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 10375 57.42 839 824 166.3
A 0 226 7401 39.54 839 824 166.3
A 3 137 7072 37.56 839 824 166.3
B 5 172 76538 490.43 818 799 154.4
B 3 64 45171 287.32 818 799 154.4
B 0 189 36045 228.22 818 799 154.4
C 14 238 126886 693.83 785 790 181.7
C 7 247 34436 185.13 785 790 181.7
C 5 112 11907 61.17 785 790 181.7
D 8 195 400030 2031.72 809 786 196.5
D 7 238 153717 778.25 809 786 196.5
D 1 52 116023 586.43 809 786 196.5

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