ASTROSAT CZTI

Data Quality Report

Orbit 20191222_A08_009T01_9000003382_level2

Creation date: 2021-09-01T11:25:42.118893
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/AS1A08_009T01_9000003382cztM0_level2_bc.evt modeM0/AS1A08_009T01_9000003382cztM0_level2_quad_clean.evt
Size (bytes)5,688,322,5602,106,792,000
Size5.3 GB 2.0 GB
Events in quadrant A30,454,80713,875,215
Events in quadrant B32,120,98914,120,517
Events in quadrant C29,083,14013,394,713
Events in quadrant D70,912,38312,658,380

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02935550
B03006390
C02960920
D04289560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029020
B029020
C029020
D029020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14255213330.935097%
B14255216591.163786%
C14255221121.481565%
D14255299486.978506%

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 209035 142559 9 9 0.00% 0.01%
B 209035 142554 54 54 0.03% 0.04%
C 209035 142554 39 39 0.02% 0.03%
D 209035 142557 3401 3401 1.63% 2.39%

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 13 252 706287 423.18 7623 7510 1651.3
A 13 254 221236 129.43 7623 7510 1651.3
A 13 170 172632 100.0 7623 7510 1651.3
B 0 190 613596 422.29 7660 7490 1435.3
B 3 64 455512 312.15 7660 7490 1435.3
B 0 197 342765 233.59 7660 7490 1435.3
C 0 239 701958 407.16 7250 7227 1706.3
C 7 247 164295 92.05 7250 7227 1706.3
C 6 80 123167 67.95 7250 7227 1706.3
D 1 52 13919238 8178.82 7235 6984 1701.0
D 1 239 12038384 7073.09 7235 6984 1701.0
D 7 238 7302222 4288.77 7235 6984 1701.0

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