ASTROSAT CZTI

Data Quality Report

Orbit 21699

Creation date: 2024-06-27T18:31:14.374364
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_039T02_9000003212_21699cztM0_level2.evt modeM0/AS1A07_039T02_9000003212_21699cztM0_level2_quad_clean.evt
Size (bytes)588,781,440133,603,200
Size561.5 MB 127.4 MB
Events in quadrant A4,778,308866,076
Events in quadrant B3,340,571950,651
Events in quadrant C5,219,710895,250
Events in quadrant D4,047,293875,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185182
B0138812
C0196532
D0163342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A656977411.782615%
B6569570.867712%
C65695969.072918%
D65691812.755366%

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 7744 6570 338 338 4.36% 5.14%
B 7744 6570 2 2 0.03% 0.03%
C 7744 6570 312 312 4.03% 4.75%
D 7744 6570 55 55 0.71% 0.84%

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 5 89 940042 6153.8 769 755 152.6
A 5 105 387342 2532.75 769 755 152.6
A 5 73 306919 2005.85 769 755 152.6
B 0 229 43272 279.06 820 798 152.2
B 3 64 33245 213.18 820 798 152.2
B 0 230 32841 210.53 820 798 152.2
C 8 208 1993085 10839.45 791 797 183.8
C 14 238 125772 679.95 791 797 183.8
C 10 23 11681 59.22 791 797 183.8
D 12 235 541475 2842.01 795 771 190.3
D 7 238 227667 1192.59 795 771 190.3
D 14 35 80497 419.05 795 771 190.3

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