ASTROSAT CZTI

Data Quality Report

Orbit 23397

Creation date: 2024-06-27T18:53:50.152562
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_127T02_9000003460_23397cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23397cztM0_level2_quad_clean.evt
Size (bytes)752,526,72076,492,800
Size717.7 MB 72.9 MB
Events in quadrant A3,222,645511,619
Events in quadrant B3,329,676516,177
Events in quadrant C3,427,901494,884
Events in quadrant D12,337,872306,518

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141931
B0143401
C0146161
D0413961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6979280.401204%
B6980380.544413%
C6980610.873926%
D6979366052.443043%

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 7429 6980 2 2 0.03% 0.03%
B 7430 6981 2 2 0.03% 0.03%
C 7430 6981 4 4 0.05% 0.06%
D 7428 6978 3559 3559 47.91% 51.00%

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 11412 62.67 832 811 169.2
A 6 16 10962 60.01 832 811 169.2
A 3 137 7516 39.64 832 811 169.2
B 0 189 34221 206.74 831 809 161.6
B 12 111 19846 117.79 831 809 161.6
B 11 111 17430 102.84 831 809 161.6
C 10 9 158966 835.92 802 807 189.2
C 14 238 125535 659.23 802 807 189.2
C 8 208 5935 27.1 802 807 189.2
D 1 52 10095936 70481.67 585 569 143.2
D 2 234 23037 156.86 585 569 143.2
D 7 55 10303 67.96 585 569 143.2

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