ASTROSAT CZTI

Data Quality Report

Orbit 20210702_C06_002T01_9000004500_level2

Creation date: 2021-07-05T11:47:50.392192
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/AS1C06_002T01_9000004500cztM0_level2_bc.evt modeM0/AS1C06_002T01_9000004500cztM0_level2_quad_clean.evt
Size (bytes)2,965,818,240832,610,880
Size2.8 GB 794.0 MB
Events in quadrant A11,116,0175,722,636
Events in quadrant B26,441,2745,573,057
Events in quadrant C12,327,1105,485,501
Events in quadrant D36,585,8935,050,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01042080
B01555810
C01106400
D01958590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010060
B010060
C010060
D010060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493535081.029319%
B4935313202.674609%
C4935315303.100115%
D49353607412.307256%

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 58188 49353 14 14 0.02% 0.03%
B 58188 49353 28 28 0.05% 0.06%
C 58188 49354 10 10 0.02% 0.02%
D 58188 49355 737 737 1.27% 1.49%

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 3 247 159756 261.93 2790 2753 599.4
A 12 96 133617 218.32 2790 2753 599.4
A 13 254 95590 154.88 2790 2753 599.4
B 6 159 14106300 27413.21 2751 2701 514.5
B 0 190 530791 1026.45 2751 2701 514.5
B 0 183 207271 397.62 2751 2701 514.5
C 3 233 956385 1497.72 2676 2675 636.8
C 0 10 451688 705.14 2676 2675 636.8
C 1 16 238922 371.0 2676 2675 636.8
D 8 195 18541658 27881.58 2605 2555 664.9
D 13 174 4104697 6169.35 2605 2555 664.9
D 2 250 1892305 2842.06 2605 2555 664.9

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