ASTROSAT CZTI

Data Quality Report

Orbit 29074

Creation date: 2024-06-27T19:59:58.793130
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/AS1A10_097T04_9000004170_29074cztM0_level2.evt modeM0/AS1A10_097T04_9000004170_29074cztM0_level2_quad_clean.evt
Size (bytes)1,423,033,920224,233,920
Size1.3 GB 213.8 MB
Events in quadrant A8,999,1061,399,193
Events in quadrant B9,168,7381,420,859
Events in quadrant C9,743,1451,357,189
Events in quadrant D13,898,2171,300,181

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393205
B0394684
C0406484
D0539924

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190634252.229450%
B190644992.617499%
C190646003.147293%
D190648984.710449%

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 20952 19062 0 0 0.00% 0.00%
B 20954 19065 4 4 0.02% 0.02%
C 20954 19064 12 12 0.06% 0.06%
D 20955 19066 533 533 2.54% 2.80%

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 29614 58.38 2325 2270 468.4
A 3 137 24254 46.93 2325 2270 468.4
A 0 226 19459 36.7 2325 2270 468.4
B 12 111 57886 125.49 2307 2245 443.4
B 11 111 52312 112.91 2307 2245 443.4
B 14 111 49900 107.47 2307 2245 443.4
C 3 233 417331 787.07 2245 2258 527.4
C 14 238 358466 675.45 2245 2258 527.4
C 2 16 175095 327.74 2245 2258 527.4
D 8 195 2831492 5303.59 2236 2175 533.5
D 1 52 1938084 3628.89 2236 2175 533.5
D 2 250 300808 559.79 2236 2175 533.5

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