ASTROSAT CZTI

Data Quality Report

Orbit 37894

Creation date: 2024-06-27T21:45:47.506908
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_001T12_9000005352_37894cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37894cztM0_level2_quad_clean.evt
Size (bytes)1,707,468,480324,855,360
Size1.6 GB 309.8 MB
Events in quadrant A11,265,3782,101,314
Events in quadrant B10,920,9582,129,004
Events in quadrant C11,374,3772,071,234
Events in quadrant D16,592,5231,949,937

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483185
B0486385
C0484145
D0659845

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23064370.160423%
B230641940.841138%
C230641120.485605%
D2306413465.835935%

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 28911 23068 16 16 0.06% 0.07%
B 28911 23068 117 117 0.40% 0.51%
C 28911 23068 82 82 0.28% 0.36%
D 28911 23068 1017 1017 3.52% 4.41%

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 1212046 2396.81 2542 2494 504.7
A 12 189 66958 127.74 2542 2494 504.7
A 15 222 51759 97.62 2542 2494 504.7
B 5 172 570893 1189.83 2517 2445 477.8
B 0 229 125863 258.33 2517 2445 477.8
B 0 213 78128 158.41 2517 2445 477.8
C 15 214 951586 1668.06 2454 2472 569.0
C 14 254 413102 721.68 2454 2472 569.0
C 0 10 274644 478.34 2454 2472 569.0
D 1 52 2299483 3913.71 2418 2352 586.9
D 12 233 1180637 2007.49 2418 2352 586.9
D 2 249 1180598 2007.42 2418 2352 586.9

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