ASTROSAT CZTI

Data Quality Report

Orbit 35213

Creation date: 2022-04-03T09:56:16.667471
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/AS1C07_004T01_9000005052_35213cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35213cztM0_level2_quad_clean.evt
Size (bytes)673,447,68053,703,360
Size642.2 MB 51.2 MB
Events in quadrant A2,688,755326,997
Events in quadrant B6,174,374305,909
Events in quadrant C3,168,880331,472
Events in quadrant D7,983,144266,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115653
B0221342
C0126662
D0276712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5629100.177651%
B5629117720.909575%
C5629781.385681%
D5629114620.358856%

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 7212 5630 2 2 0.03% 0.04%
B 7212 5630 765 765 10.61% 13.59%
C 7212 5630 59 59 0.82% 1.05%
D 7212 5630 1083 1083 15.02% 19.24%

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 10 83 100339 752.33 655 642 132.5
A 13 6 12503 89.5 655 642 132.5
A 7 191 12121 86.62 655 642 132.5
B 5 236 3605994 31262.92 603 589 115.3
B 4 232 101178 872.22 603 589 115.3
B 5 172 35335 301.29 603 589 115.3
C 0 10 293688 1989.58 635 638 147.3
C 15 214 238468 1614.68 635 638 147.3
C 1 23 47756 319.89 635 638 147.3
D 8 195 4080197 28003.02 600 582 145.7
D 5 223 963735 6611.21 600 582 145.7
D 2 250 175635 1201.59 600 582 145.7

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