ASTROSAT CZTI

Data Quality Report

Orbit 35134

Creation date: 2022-07-18T20:42:49.393169
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/AS1A11_047T09_9000005028_35134cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35134cztM0_level2_quad_clean.evt
Size (bytes)768,983,04064,183,680
Size733.4 MB 61.2 MB
Events in quadrant A8,772,408376,658
Events in quadrant B2,991,401444,465
Events in quadrant C3,057,674428,847
Events in quadrant D8,122,731333,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295233
B0121682
C0121392
D0277202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5122225444.006248%
B5122571.112847%
C51221452.830925%
D5122124824.365482%

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 7125 5123 2241 2241 31.45% 43.74%
B 7125 5123 26 26 0.36% 0.51%
C 7125 5123 97 97 1.36% 1.89%
D 7125 5123 1310 1310 18.39% 25.57%

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 6648756 63453.91 523 514 104.8
A 10 83 85764 813.67 523 514 104.8
A 13 6 13988 128.6 523 514 104.8
B 5 172 279387 2419.01 602 586 115.3
B 0 190 168554 1457.37 602 586 115.3
B 5 236 98261 847.47 602 586 115.3
C 0 10 405044 2989.87 584 589 135.3
C 15 214 214878 1584.1 584 589 135.3
C 14 67 75749 555.61 584 589 135.3
D 8 195 3673873 28587.69 529 516 128.5
D 10 118 1318013 10253.34 529 516 128.5
D 14 52 325789 2531.42 529 516 128.5

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