ASTROSAT CZTI

Data Quality Report

Orbit 40100

Creation date: 2024-06-27T22:12:20.832799
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/AS1A12_004T01_9000005520_40100cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40100cztM0_level2_quad_clean.evt
Size (bytes)388,126,08089,236,800
Size370.1 MB 85.1 MB
Events in quadrant A2,695,328604,479
Events in quadrant B2,540,862632,429
Events in quadrant C4,402,632577,051
Events in quadrant D4,322,934523,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112733
B0111212
C0165812
D0164862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521690.172546%
B5216120.230061%
C52162955.655675%
D52163065.866564%

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 7339 5217 3 3 0.04% 0.06%
B 7339 5217 2 2 0.03% 0.04%
C 7339 5217 268 268 3.65% 5.14%
D 7339 5217 334 334 4.55% 6.40%

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 450450 3849.78 573 561 116.9
A 15 223 15918 131.41 573 561 116.9
A 2 79 8963 71.9 573 561 116.9
B 0 189 189435 1701.77 574 560 111.0
B 4 171 66053 590.09 574 560 111.0
B 10 246 27477 242.52 574 560 111.0
C 9 187 1865577 14580.31 551 555 127.9
C 15 214 215356 1679.26 551 555 127.9
C 0 10 124831 971.56 551 555 127.9
D 12 227 2036112 15224.23 544 528 133.7
D 13 249 76620 569.09 544 528 133.7
D 1 47 54187 401.31 544 528 133.7

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