ASTROSAT CZTI

Data Quality Report

Orbit 08609

Creation date: 2024-06-27T15:34:54.391099
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/AS1A03_102T01_9000001202_08609cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08609cztM0_level2_quad_clean.evt
Size (bytes)1,939,792,320454,135,680
Size1.8 GB 433.1 MB
Events in quadrant A13,306,3022,960,436
Events in quadrant B15,588,0703,021,762
Events in quadrant C12,489,8822,969,288
Events in quadrant D15,415,2022,824,072

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05900
B05900
C05900
D05900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602746
B0659156
C0585026
D0670236

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287934721.639287%
B287939003.125760%
C287932500.868267%
D287938883.084083%

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 32074 28794 94 94 0.29% 0.33%
B 32074 28794 465 465 1.45% 1.61%
C 32074 28795 0 0 0.00% 0.00%
D 32074 28795 641 641 2.00% 2.23%

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 13 248 207015 312.0 3245 3166 653.4
A 15 223 160379 240.62 3245 3166 653.4
A 5 16 152894 229.17 3245 3166 653.4
B 10 16 1635774 2665.29 3253 3173 612.5
B 0 214 352828 570.83 3253 3173 612.5
B 0 219 246884 397.87 3253 3173 612.5
C 12 16 49352 62.87 3181 3182 734.4
C 13 61 24170 28.58 3181 3182 734.4
C 8 222 18287 20.57 3181 3182 734.4
D 9 102 1605346 2096.38 3156 3058 764.3
D 12 233 501384 651.99 3156 3058 764.3
D 13 105 340111 440.99 3156 3058 764.3

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