ASTROSAT CZTI

Data Quality Report

Orbit 25000

Creation date: 2024-06-27T19:12:33.355907
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_127T03_9000003662_25000cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_25000cztM0_level2_quad_clean.evt
Size (bytes)455,379,840101,234,880
Size434.3 MB 96.5 MB
Events in quadrant A3,262,670652,944
Events in quadrant B3,380,236672,844
Events in quadrant C3,427,139647,913
Events in quadrant D3,276,025635,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137882
B0140812
C0140892
D0138612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6547570.870628%
B6547951.451046%
C65471352.062013%
D6547380.580419%

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 7577 6549 0 0 0.00% 0.00%
B 7577 6549 3 3 0.04% 0.05%
C 7577 6549 2 2 0.03% 0.03%
D 7577 6549 1 1 0.01% 0.02%

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 9962 53.92 846 829 169.4
A 3 137 7479 39.26 846 829 169.4
A 0 226 7130 37.2 846 829 169.4
B 0 190 24775 148.96 851 832 160.7
B 15 32 21942 131.33 851 832 160.7
B 12 111 19606 116.8 851 832 160.7
C 14 238 130599 665.07 829 835 195.1
C 7 247 48057 242.02 829 835 195.1
C 2 16 16988 82.79 829 835 195.1
D 8 195 55083 265.78 839 816 204.2
D 2 244 29542 140.69 839 816 204.2
D 2 234 24770 117.32 839 816 204.2

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