ASTROSAT CZTI

Data Quality Report

Orbit 20170830_G07_057T02_9000001504_level2

Creation date: 2021-08-27T18:55:52.066378
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/AS1G07_057T02_9000001504cztM0_level2_bc.evt modeM0/AS1G07_057T02_9000001504cztM0_level2_quad_clean.evt
Size (bytes)1,741,273,920604,540,800
Size1.6 GB 576.5 MB
Events in quadrant A9,919,7603,686,438
Events in quadrant B12,646,7813,795,383
Events in quadrant C9,334,6693,728,413
Events in quadrant D17,617,0163,872,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0964040
B0993630
C0953720
D01221960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0960
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010180
B010280
C010290
D010290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A465063350.720337%
B445766361.426777%
C468572060.439635%
D498935441.090333%

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 69738 54087 0 0 0.00% 0.00%
B 69737 52485 12 12 0.02% 0.02%
C 69738 54254 0 0 0.00% 0.00%
D 69738 53717 70 70 0.10% 0.13%

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 13 251 669477 1305.45 2352 2302 511.1
A 4 2 83224 158.34 2352 2302 511.1
A 8 15 30470 55.12 2352 2302 511.1
B 4 239 1285368 2762.01 2628 2561 464.4
B 0 219 317882 678.92 2628 2561 464.4
B 11 51 286090 610.47 2628 2561 464.4
C 14 234 83023 155.59 2355 2320 518.7
C 14 67 16377 27.1 2355 2320 518.7
C 8 128 14975 24.4 2355 2320 518.7
D 8 195 2792094 4803.07 2498 2407 580.8
D 1 52 2233571 3841.45 2498 2407 580.8
D 1 20 1755363 3018.11 2498 2407 580.8

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