ASTROSAT CZTI

Data Quality Report

Orbit 07886

Creation date: 2024-06-27T15:25:12.651520
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/AS1A02_071T01_9000001078_07886cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07886cztM0_level2_quad_clean.evt
Size (bytes)466,110,720100,344,960
Size444.5 MB 95.7 MB
Events in quadrant A2,931,515663,128
Events in quadrant B3,076,971682,782
Events in quadrant C2,923,349666,686
Events in quadrant D4,774,042604,174

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126312
B0130731
C0125321
D0182641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6040250.413907%
B6040480.794702%
C604080.132450%
D60403706.125828%

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 7260 6041 6 6 0.08% 0.10%
B 7260 6041 13 13 0.18% 0.22%
C 7260 6041 0 0 0.00% 0.00%
D 7260 6041 505 505 6.96% 8.36%

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 48067 316.36 735 722 149.7
A 15 223 26515 172.35 735 722 149.7
A 15 239 11450 71.69 735 722 149.7
B 4 81 42712 298.36 746 731 140.7
B 11 51 39586 276.15 746 731 140.7
B 4 239 38618 269.27 746 731 140.7
C 1 16 106053 634.37 722 729 166.0
C 13 61 5557 29.08 722 729 166.0
C 3 202 1793 6.41 722 729 166.0
D 1 52 1491712 8898.21 698 682 167.6
D 1 20 316412 1884.22 698 682 167.6
D 2 152 183808 1092.86 698 682 167.6

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