ASTROSAT CZTI

Data Quality Report

Orbit 34272

Creation date: 2022-01-29T20:14:13.534519
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/AS1T04_086T01_9000004890_34272cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34272cztM0_level2_quad_clean.evt
Size (bytes)92,056,32018,276,480
Size87.8 MB 17.4 MB
Events in quadrant A484,537121,342
Events in quadrant B943,433115,113
Events in quadrant C582,033123,083
Events in quadrant D708,041117,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020312
B035151
C022801
D027151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98320.203459%
B98313213.428281%
C983232.339776%
D983212.136317%

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 2597 984 0 0 0.00% 0.00%
B 2597 984 80 80 3.08% 8.13%
C 2597 984 15 15 0.58% 1.52%
D 2597 984 18 18 0.69% 1.83%

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 11715 443.06 121 119 26.2
A 13 254 1593 56.32 121 119 26.2
A 3 137 1221 42.1 121 119 26.2
B 5 172 367736 15479.42 113 110 23.7
B 4 251 103734 4363.24 113 110 23.7
B 0 190 15239 637.03 113 110 23.7
C 15 214 46389 1620.17 116 117 28.6
C 0 10 43879 1532.28 116 117 28.6
C 14 254 21839 760.57 116 117 28.6
D 8 195 119672 3940.98 119 115 30.3
D 14 52 61892 2036.37 119 115 30.3
D 2 250 20900 685.14 119 115 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