ASTROSAT CZTI

Data Quality Report

Orbit 34714

Creation date: 2022-03-03T10:43:40.937417
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_006T02_9000004980_34714cztM0_level2.evt modeM0/AS1C07_006T02_9000004980_34714cztM0_level2_quad_clean.evt
Size (bytes)83,234,8804,757,760
Size79.4 MB 4.5 MB
Events in quadrant A545,58517,301
Events in quadrant B664,49317,554
Events in quadrant C569,48016,018
Events in quadrant D671,41816,566

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021892
B025691
C022341
D026381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98010.102041%
B980464.693878%
C980242.448980%
D98040.408163%

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 980 980 0 0 0.00% 0.00%
B 980 980 29 29 2.96% 2.96%
C 980 980 16 16 1.63% 1.63%
D 980 980 6 6 0.61% 0.61%

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 47857 1832.04 120 117 26.1
A 10 83 20469 781.01 120 117 26.1
A 9 143 7533 284.59 120 117 26.1
B 5 172 77813 3160.34 115 112 24.6
B 5 255 72981 2963.8 115 112 24.6
B 4 81 39370 1596.74 115 112 24.6
C 0 10 65050 2360.07 112 112 27.5
C 15 214 44903 1627.86 112 112 27.5
C 15 159 18440 666.1 112 112 27.5
D 8 195 136664 4510.64 114 111 30.3
D 2 250 28093 924.31 114 111 30.3
D 12 6 19004 624.08 114 111 30.3

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