ASTROSAT CZTI

Data Quality Report

Orbit 19150

Creation date: 2024-06-27T17:59:33.887228
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_046T01_9000002838_19150cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19150cztM0_level2_quad_clean.evt
Size (bytes)461,839,680108,636,480
Size440.4 MB 103.6 MB
Events in quadrant A3,672,611712,355
Events in quadrant B3,321,403742,264
Events in quadrant C3,402,400713,860
Events in quadrant D3,165,749685,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148432
B0137482
C0138703
D0133932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62473074.914359%
B6247931.488715%
C6246921.472943%
D6246180.288184%

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 7572 6248 199 199 2.63% 3.19%
B 7572 6248 5 5 0.07% 0.08%
C 7571 6247 5 5 0.07% 0.08%
D 7571 6247 7 7 0.09% 0.11%

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 13 170 616276 3886.24 790 773 158.4
A 15 174 8412 48.23 790 773 158.4
A 0 226 6735 37.64 790 773 158.4
B 7 220 50423 318.59 821 799 155.8
B 3 112 22280 137.91 821 799 155.8
B 12 111 17478 107.08 821 799 155.8
C 3 233 163391 882.05 794 803 184.3
C 14 238 125042 674.0 794 803 184.3
C 0 207 20759 108.26 794 803 184.3
D 1 52 168934 873.81 792 772 192.4
D 2 234 25805 130.08 792 772 192.4
D 10 199 12081 58.76 792 772 192.4

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