ASTROSAT CZTI

Data Quality Report

Orbit 26483

Creation date: 2024-06-27T19:29:35.607222
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_146T01_9000003828_26483cztM0_level2.evt modeM0/AS1A07_146T01_9000003828_26483cztM0_level2_quad_clean.evt
Size (bytes)912,769,920160,680,960
Size870.5 MB 153.2 MB
Events in quadrant A6,020,7931,013,050
Events in quadrant B6,146,0321,035,772
Events in quadrant C6,446,294981,857
Events in quadrant D8,168,088954,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258680
B0260490
C0266730
D0327110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127351180.926580%
B127351160.910876%
C127351491.170004%
D127355063.973302%

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 14760 12736 0 0 0.00% 0.00%
B 14760 12737 2 2 0.01% 0.02%
C 14760 12736 2 2 0.01% 0.02%
D 14760 12737 379 379 2.57% 2.98%

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 19463 57.08 1560 1525 314.3
A 3 137 14708 41.95 1560 1525 314.3
A 0 226 13234 37.26 1560 1525 314.3
B 12 111 36941 119.84 1545 1506 295.7
B 0 190 34373 111.15 1545 1506 295.7
B 11 111 33205 107.2 1545 1506 295.7
C 3 233 316217 902.92 1492 1504 348.5
C 14 238 236670 674.7 1492 1504 348.5
C 14 176 53128 148.11 1492 1504 348.5
D 7 80 1240129 3462.87 1493 1455 357.7
D 1 52 925614 2583.61 1493 1455 357.7
D 12 233 261530 727.07 1493 1455 357.7

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