ASTROSAT CZTI

Data Quality Report

Orbit 20200217_A07_027T09_9000003512_level2

Creation date: 2020-02-21T14:27:38.084128
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_027T09_9000003512cztM0_level2.evt modeM0/AS1A07_027T09_9000003512cztM0_level2_quad_clean.evt
Size (bytes)1,239,831,360195,048,000
Size1.2 GB 186.0 MB
Events in quadrant A6,711,6021,260,593
Events in quadrant B8,571,8701,248,991
Events in quadrant C6,851,7731,238,418
Events in quadrant D14,444,6801,167,208

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295020
B0347310
C0297390
D0533590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143631511.051312%
B143634683.258372%
C143632081.448165%
D143635633.919794%

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 16713 14363 2 2 0.01% 0.01%
B 16713 14363 285 285 1.71% 1.98%
C 16713 14363 1 1 0.01% 0.01%
D 16713 14363 479 479 2.87% 3.33%

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 13 254 25541 68.09 1736 1697 350.2
A 3 137 15463 39.31 1736 1697 350.2
A 0 226 14970 37.9 1736 1697 350.2
B 3 64 993025 3038.04 1711 1671 326.3
B 0 229 478106 1460.05 1711 1671 326.3
B 0 189 289475 881.98 1711 1671 326.3
C 14 238 265424 676.1 1660 1667 390.1
C 7 247 102128 257.52 1660 1667 390.1
C 2 16 16802 38.8 1660 1667 390.1
D 8 195 6299960 15615.12 1661 1611 403.3
D 1 52 895367 2215.84 1661 1611 403.3
D 7 238 292378 720.88 1661 1611 403.3

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