ASTROSAT CZTI

Data Quality Report

Orbit 40111

Creation date: 2024-06-27T22:12:27.823711
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_40111cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40111cztM0_level2_quad_clean.evt
Size (bytes)391,919,04087,229,440
Size373.8 MB 83.2 MB
Events in quadrant A3,526,249556,313
Events in quadrant B2,439,998628,008
Events in quadrant C4,586,910565,357
Events in quadrant D3,558,037534,527

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136613
B0105972
C0171072
D0142942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50964017.868917%
B5096120.235479%
C50964238.300628%
D50962254.415228%

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 7007 5097 349 349 4.98% 6.85%
B 7007 5097 6 6 0.09% 0.12%
C 7007 5097 416 416 5.94% 8.16%
D 7007 5097 192 192 2.74% 3.77%

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 13 248 884761 7939.35 544 534 111.4
A 10 83 385488 3456.45 544 534 111.4
A 12 189 88069 785.96 544 534 111.4
B 0 189 95144 843.85 577 560 112.1
B 4 171 50470 445.28 577 560 112.1
B 5 255 16164 139.21 577 560 112.1
C 9 187 2040712 16062.78 550 554 127.0
C 15 214 203875 1600.8 550 554 127.0
C 10 20 85559 669.27 550 554 127.0
D 12 227 432264 3147.14 557 542 137.2
D 5 32 309982 2255.74 557 542 137.2
D 2 249 206772 1503.36 557 542 137.2

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