ASTROSAT CZTI

Data Quality Report

Orbit 01207

Creation date: 2024-06-27T14:09:09.298631
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/AS1G04_007T02_9000000220_01207cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01207cztM0_level2_quad_clean.evt
Size (bytes)1,148,935,680104,857,920
Size1.1 GB 100.0 MB
Events in quadrant A8,451,099691,368
Events in quadrant B8,982,887683,715
Events in quadrant C8,546,012658,480
Events in quadrant D8,349,141651,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301182
B0317051
C0303701
D0298731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A704670.099347%
B7046540.766392%
C704660.085155%
D70461181.674709%

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 7326 7047 224 224 3.06% 3.18%
B 7326 7047 387 387 5.28% 5.49%
C 7326 7047 202 202 2.76% 2.87%
D 7326 7047 422 422 5.76% 5.99%

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 8 14 50397 92.06 2181 2193 523.6
A 4 32 13614 21.81 2181 2193 523.6
A 11 79 9565 14.08 2181 2193 523.6
B 5 191 278568 518.25 2254 2266 533.1
B 15 22 49046 87.74 2254 2266 533.1
B 6 53 27256 46.87 2254 2266 533.1
C 15 241 375392 645.8 2064 2135 578.0
C 3 79 53440 88.77 2064 2135 578.0
C 3 111 38969 63.73 2064 2135 578.0
D 13 70 287805 458.27 2018 2093 623.5
D 13 205 173672 275.21 2018 2093 623.5
D 10 84 126807 200.04 2018 2093 623.5

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