ASTROSAT CZTI

Data Quality Report

Orbit 40201

Creation date: 2024-06-27T22:13:32.712878
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_053T01_9000005530_40201cztM0_level2.fits modeM0/AS1A12_053T01_9000005530_40201cztM0_level2_quad_clean.evt
Size (bytes)373,158,72084,980,160
Size355.9 MB 81.0 MB
Events in quadrant A2,848,158589,614
Events in quadrant B2,478,599616,725
Events in quadrant C2,823,688579,456
Events in quadrant D5,281,375444,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114673
B0106192
C0113252
D0190222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4896791.613562%
B4896240.490196%
C4896661.348039%
D489697819.975490%

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 7018 4897 56 56 0.80% 1.14%
B 7018 4897 12 12 0.17% 0.25%
C 7018 4897 55 55 0.78% 1.12%
D 7017 4896 874 874 12.46% 17.85%

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 436435 3815.37 556 545 114.2
A 13 248 199902 1744.98 556 545 114.2
A 9 143 30797 264.8 556 545 114.2
B 5 255 149465 1371.98 561 546 108.5
B 4 171 55438 505.72 561 546 108.5
B 0 229 25712 231.85 561 546 108.5
C 15 214 204658 1572.98 550 555 129.8
C 14 254 145701 1118.61 550 555 129.8
C 4 254 133043 1021.06 550 555 129.8
D 12 227 3105521 26256.06 477 463 118.3
D 12 218 132984 1120.58 477 463 118.3
D 12 79 78435 659.32 477 463 118.3

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