ASTROSAT CZTI

Data Quality Report

Orbit 20458

Creation date: 2024-06-27T18:15:38.422653
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/AS1A05_198T01_9000003024_20458cztM0_level2.evt modeM0/AS1A05_198T01_9000003024_20458cztM0_level2_quad_clean.evt
Size (bytes)1,108,774,080183,265,920
Size1.0 GB 174.8 MB
Events in quadrant A7,362,5731,147,646
Events in quadrant B8,297,3921,159,469
Events in quadrant C7,963,5421,101,020
Events in quadrant D8,911,2261,076,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03162
B03151
C03160
D03162

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032047214
B034617223
C033691278
D037258261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154422541.644865%
B154444492.907278%
C154303122.022035%
D154345483.550603%

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 19244 15500 2 2 0.01% 0.01%
B 19245 15501 106 106 0.55% 0.68%
C 19245 15492 5 5 0.03% 0.03%
D 19244 15494 302 302 1.57% 1.95%

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 15 222 119783 312.62 1876 1834 377.3
A 5 16 23692 57.93 1876 1834 377.3
A 0 226 16255 38.22 1876 1834 377.3
B 7 220 497367 1392.94 1850 1802 355.8
B 0 189 199566 555.88 1850 1802 355.8
B 10 245 140523 389.92 1850 1802 355.8
C 3 233 702111 1671.01 1785 1796 419.1
C 14 238 279424 662.44 1785 1796 419.1
C 9 221 26343 58.57 1785 1796 419.1
D 12 218 1035736 2316.01 1811 1757 446.4
D 15 0 522151 1165.63 1811 1757 446.4
D 1 52 261757 582.37 1811 1757 446.4

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