ASTROSAT CZTI

Data Quality Report

Orbit 20220106_A11_046T03_9000004848_level2

Creation date: 2022-01-08T13:26:59.295939
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/AS1A11_046T03_9000004848cztM0_level2_bc.evt modeM0/AS1A11_046T03_9000004848cztM0_level2_quad_clean.evt
Size (bytes)2,036,269,440555,258,240
Size1.9 GB 529.5 MB
Events in quadrant A12,271,7703,486,101
Events in quadrant B12,431,0933,582,227
Events in quadrant C13,073,2763,536,060
Events in quadrant D21,022,5083,318,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08540
B08660
C08700
D08640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01450
C01450
D01450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01001750
B01005620
C0973030
D01280870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4201812522.979675%
B4226912302.909934%
C422853310.782783%
D4203022025.239115%

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 57821 42504 9 9 0.02% 0.02%
B 57821 42723 65 65 0.11% 0.15%
C 57821 42761 39 39 0.07% 0.09%
D 57821 42518 504 504 0.87% 1.19%

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 15 169 3472269 7122.04 2222 2192 487.2
A 13 254 65417 129.76 2222 2192 487.2
A 13 6 62565 123.91 2222 2192 487.2
B 5 172 2708402 6198.0 2228 2183 436.6
B 0 229 144188 325.23 2228 2183 436.6
B 4 251 139916 315.45 2228 2183 436.6
C 15 214 1726197 3476.3 2182 2162 495.9
C 0 10 982306 1976.34 2182 2162 495.9
C 3 233 941976 1895.02 2182 2162 495.9
D 8 195 5634453 10605.93 2150 2087 531.1
D 8 230 1746039 3283.92 2150 2087 531.1
D 2 250 1460363 2745.98 2150 2087 531.1

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