ASTROSAT CZTI

Data Quality Report

Orbit 31588

Creation date: 2024-06-27T20:30:22.494437
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/AS1C06_006T06_9000004608_31588cztM0_level2.evt modeM0/AS1C06_006T06_9000004608_31588cztM0_level2_quad_clean.evt
Size (bytes)1,098,334,080113,800,320
Size1.0 GB 108.5 MB
Events in quadrant A5,315,257740,723
Events in quadrant B12,345,336588,042
Events in quadrant C5,498,041710,450
Events in quadrant D9,370,535652,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04225
B04631
C03014
D04930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272824795
B05547811712
C0277524846
D0435188270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028157
B027244
C029158
D028355

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11006140.127203%
B10614179116.873940%
C11017820.744304%
D108135274.873763%

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 23981 11424 0 0 0.00% 0.00%
B 23966 11085 1414 1414 5.90% 12.76%
C 23979 11415 4 4 0.02% 0.04%
D 23965 11237 379 379 1.58% 3.37%

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 19954 67.79 1378 1352 274.4
A 3 137 13260 43.39 1378 1352 274.4
A 0 226 11878 38.36 1378 1352 274.4
B 12 1 3763964 16515.63 1226 1199 227.8
B 6 159 2789408 12238.08 1226 1199 227.8
B 4 80 565604 2477.3 1226 1199 227.8
C 14 238 215078 699.72 1317 1328 305.5
C 4 175 50583 161.24 1317 1328 305.5
C 3 233 35925 113.25 1317 1328 305.5
D 8 195 2706367 9024.9 1279 1247 299.7
D 12 218 713034 2374.68 1279 1247 299.7
D 2 250 364147 1210.72 1279 1247 299.7

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