ASTROSAT CZTI

Data Quality Report

Orbit 32883

Creation date: 2024-06-27T20:43:05.171716
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/AS1A11_005T05_9000004744_32883cztM0_level2.evt modeM0/AS1A11_005T05_9000004744_32883cztM0_level2_quad_clean.evt
Size (bytes)1,045,140,480135,895,680
Size996.7 MB 129.6 MB
Events in quadrant A4,339,075942,360
Events in quadrant B6,700,820884,350
Events in quadrant C5,366,396934,226
Events in quadrant D14,591,886680,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195813
B0262192
C0223492
D0501092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A969680.082508%
B96968108.353960%
C96963173.269389%
D9696311332.106023%

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 12982 9698 1 1 0.01% 0.01%
B 12982 9698 594 594 4.58% 6.12%
C 12982 9698 241 241 1.86% 2.49%
D 12982 9698 2684 2684 20.67% 27.68%

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 14 239 21664 92.24 1113 1092 223.0
A 13 254 18358 77.41 1113 1092 223.0
A 3 137 10262 41.12 1113 1092 223.0
B 5 172 1996645 10007.44 1065 1040 199.4
B 0 219 113518 564.05 1065 1040 199.4
B 15 85 105473 523.7 1065 1040 199.4
C 0 207 705850 2819.08 1087 1096 250.0
C 0 10 148026 587.73 1087 1096 250.0
C 3 233 113571 449.91 1087 1096 250.0
D 7 80 5974302 25774.63 918 901 231.8
D 8 195 2811997 12129.6 918 901 231.8
D 10 203 852402 3674.14 918 901 231.8

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