ASTROSAT CZTI

Data Quality Report

Orbit 24304

Creation date: 2024-06-27T19:04:34.298288
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_145T01_9000003594_24304cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24304cztM0_level2_quad_clean.evt
Size (bytes)613,051,200100,725,120
Size584.7 MB 96.1 MB
Events in quadrant A3,326,436663,515
Events in quadrant B3,368,216690,759
Events in quadrant C4,376,850643,238
Events in quadrant D7,050,315594,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139042
B0139752
C0174032
D0254412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6574320.486766%
B6574550.836629%
C65742383.620322%
D657479012.017037%

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 7894 6575 0 0 0.00% 0.00%
B 7894 6575 6 6 0.08% 0.09%
C 7894 6575 89 89 1.13% 1.35%
D 7894 6574 742 742 9.40% 11.29%

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 3 1 68007 396.86 845 831 169.3
A 13 254 9457 50.96 845 831 169.3
A 0 226 7166 37.43 845 831 169.3
B 12 17 39281 240.92 849 828 159.6
B 12 111 18916 113.33 849 828 159.6
B 11 111 16454 97.9 849 828 159.6
C 7 247 614435 3289.63 805 811 186.5
C 2 16 459883 2461.08 805 811 186.5
C 14 238 131445 700.33 805 811 186.5
D 1 52 3671138 19495.99 778 756 188.3
D 8 195 235062 1244.56 778 756 188.3
D 9 1 145751 770.17 778 756 188.3

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