ASTROSAT CZTI

Data Quality Report

Orbit 35803

Creation date: 2022-05-14T11:43:37.661059
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_146T01_9000005142_35803cztM0_level2.evt modeM0/AS1A09_146T01_9000005142_35803cztM0_level2_quad_clean.evt
Size (bytes)376,580,16050,132,160
Size359.1 MB 47.8 MB
Events in quadrant A2,610,666302,292
Events in quadrant B2,690,254309,470
Events in quadrant C3,077,337298,533
Events in quadrant D2,722,744293,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105052
B0109991
C0118771
D0111841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44631964.391665%
B4463902.016581%
C4463821.837329%
D44631272.845620%

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 5773 4463 186 186 3.22% 4.17%
B 5774 4464 48 48 0.83% 1.08%
C 5774 4464 76 76 1.32% 1.70%
D 5774 4464 103 103 1.78% 2.31%

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 554146 5439.04 502 491 101.8
A 10 83 100264 980.16 502 491 101.8
A 13 6 16166 153.99 502 491 101.8
B 5 172 238487 2398.55 505 491 99.2
B 0 213 127086 1275.84 505 491 99.2
B 4 171 94212 944.53 505 491 99.2
C 10 49 747560 6442.07 495 498 116.0
C 15 214 183277 1576.14 495 498 116.0
C 9 187 96800 830.43 495 498 116.0
D 13 249 551616 4521.41 495 482 121.9
D 10 118 61957 504.33 495 482 121.9
D 14 52 41243 334.4 495 482 121.9

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