ASTROSAT CZTI

Data Quality Report

Orbit 13774

Creation date: 2024-06-27T16:45:55.770330
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/AS1A04_199T01_9000002040_13774cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13774cztM0_level2_quad_clean.evt
Size (bytes)475,519,68088,257,600
Size453.5 MB 84.2 MB
Events in quadrant A3,378,150549,198
Events in quadrant B3,242,787567,011
Events in quadrant C3,112,535559,390
Events in quadrant D4,215,143532,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145593
B0139562
C0136422
D0170502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66601432.147147%
B6660610.915916%
C6660140.210210%
D66601362.042042%

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 7586 6662 97 97 1.28% 1.46%
B 7586 6662 13 13 0.17% 0.20%
C 7586 6662 4 4 0.05% 0.06%
D 7586 6662 87 87 1.15% 1.31%

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 9 143 312873 1928.08 785 765 161.9
A 2 79 9100 51.49 785 765 161.9
A 8 15 8749 49.32 785 765 161.9
B 4 80 33695 217.56 792 773 151.3
B 0 219 32333 208.55 792 773 151.3
B 4 173 22677 144.75 792 773 151.3
C 3 233 75969 416.93 773 775 180.4
C 14 220 19612 104.45 773 775 180.4
C 13 61 5445 25.89 773 775 180.4
D 5 222 686795 3639.94 770 747 188.5
D 1 52 365557 1935.56 770 747 188.5
D 10 157 133549 704.6 770 747 188.5

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