ASTROSAT CZTI

Data Quality Report

Orbit 28104

Creation date: 2024-06-27T19:48:05.524913
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_057T05_9000004060_28104cztM0_level2.evt modeM0/AS1A10_057T05_9000004060_28104cztM0_level2_quad_clean.evt
Size (bytes)1,214,953,920237,997,440
Size1.1 GB 227.0 MB
Events in quadrant A8,100,2431,562,527
Events in quadrant B8,179,8061,533,230
Events in quadrant C8,517,2001,463,376
Events in quadrant D10,829,1151,458,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353240
B0355940
C0364360
D0438720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211
B0213
C0213
D0211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172141090.633206%
B172311610.934362%
C172112761.603626%
D170144822.832961%

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 20963 17634 4 4 0.02% 0.02%
B 20956 17635 2 2 0.01% 0.01%
C 20960 17631 39 39 0.19% 0.22%
D 20963 17409 281 281 1.34% 1.61%

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 29230 64.93 2087 2046 418.7
A 5 98 27486 60.76 2087 2046 418.7
A 8 192 20843 44.9 2087 2046 418.7
B 0 230 57166 141.17 2054 2003 390.8
B 12 111 49416 121.33 2054 2003 390.8
B 11 111 45070 110.21 2054 2003 390.8
C 14 238 313425 671.49 1977 1994 463.8
C 15 208 215416 460.17 1977 1994 463.8
C 3 233 197202 420.9 1977 1994 463.8
D 8 195 1399981 2942.3 1974 1917 475.2
D 2 250 955190 2006.22 1974 1917 475.2
D 1 52 501599 1051.61 1974 1917 475.2

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