ASTROSAT CZTI

Data Quality Report

Orbit 42486

Creation date: 2024-06-27T22:40:43.931402
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/AS1C07_001T10_9000005806_42486cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42486cztM0_level2_quad_clean.evt
Size (bytes)1,486,416,960378,535,680
Size1.4 GB 361.0 MB
Events in quadrant A12,536,7252,556,247
Events in quadrant B11,912,7252,560,725
Events in quadrant C11,062,5892,518,345
Events in quadrant D17,657,3642,178,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04880
B04880
C04880
D04880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0523286
B0531835
C0489055
D0698955

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23936480.200535%
B239373881.620922%
C23937360.150395%
D2393720638.618457%

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 31730 23941 22 22 0.07% 0.09%
B 31731 23942 265 265 0.84% 1.11%
C 31731 23942 21 21 0.07% 0.09%
D 31731 23942 1940 1940 6.11% 8.10%

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 10 83 2143192 4142.57 2540 2488 516.8
A 12 189 346806 666.3 2540 2488 516.8
A 14 235 89009 167.43 2540 2488 516.8
B 5 255 835172 1763.46 2489 2417 472.2
B 0 245 554833 1169.81 2489 2417 472.2
B 5 172 508122 1070.89 2489 2417 472.2
C 15 214 976041 1714.88 2462 2477 567.7
C 14 254 280779 490.21 2462 2477 567.7
C 9 54 75972 129.46 2462 2477 567.7
D 2 16 4769019 8179.37 2410 2343 582.8
D 1 52 691769 1183.02 2410 2343 582.8
D 12 0 661369 1130.85 2410 2343 582.8

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