ASTROSAT CZTI

Data Quality Report

Orbit 20220511_A09_029T09_9000005138_level2

Creation date: 2022-05-18T17:07:52.532005
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/AS1A09_029T09_9000005138cztM0_level2_bc.evt modeM0/AS1A09_029T09_9000005138cztM0_level2_quad_clean.evt
Size (bytes)2,227,688,640604,396,800
Size2.1 GB 576.4 MB
Events in quadrant A21,058,3543,699,918
Events in quadrant B14,917,8043,947,972
Events in quadrant C11,706,1033,927,955
Events in quadrant D16,788,6073,708,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09000
B09000
C09000
D09000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01391560
B01125130
C0949730
D01159340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4400040299.156818%
B4400414953.397418%
C440094751.079325%
D4400213803.136221%

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 58016 43997 36 36 0.06% 0.08%
B 58016 44008 55 55 0.09% 0.12%
C 58016 44011 46 46 0.08% 0.10%
D 58016 44006 114 114 0.20% 0.26%

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 11840841 25089.0 2111 2074 471.9
A 10 83 934380 1975.76 2111 2074 471.9
A 13 6 65198 133.77 2111 2074 471.9
B 5 172 1868080 4244.65 2197 2149 439.6
B 5 255 1144781 2599.28 2197 2149 439.6
B 4 171 1091876 2478.93 2197 2149 439.6
C 15 214 1737318 3554.36 2138 2119 488.2
C 0 10 797871 1630.01 2138 2119 488.2
C 1 23 335496 682.89 2138 2119 488.2
D 8 195 2228346 4353.22 2150 2082 511.4
D 13 249 1615766 3155.38 2150 2082 511.4
D 14 52 1579921 3085.29 2150 2082 511.4

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