ASTROSAT CZTI

Data Quality Report

Orbit 09081

Creation date: 2024-06-27T15:40:55.165549
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/AS1A03_120T01_9000001266_09081cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09081cztM0_level2_quad_clean.evt
Size (bytes)246,415,68031,458,240
Size235.0 MB 30.0 MB
Events in quadrant A2,127,152175,419
Events in quadrant B1,764,378181,553
Events in quadrant C1,630,471178,251
Events in quadrant D1,702,862170,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B041
C040
D042

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09186597
B07939500
C07607452
D07905505

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0762
B0764
C0766
D0762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3458611.764025%
B3472421.209677%
C3473340.978981%
D3459250.722752%

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 4111 3622 8 8 0.19% 0.22%
B 4112 3640 3 3 0.07% 0.08%
C 4112 3631 0 0 0.00% 0.00%
D 4112 3626 2 2 0.05% 0.06%

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 8 5 408518 4646.67 424 415 87.8
A 1 162 32860 369.42 424 415 87.8
A 5 16 12639 139.18 424 415 87.8
B 5 174 39224 457.27 429 417 84.9
B 0 229 23371 270.47 429 417 84.9
B 4 80 16283 186.95 429 417 84.9
C 13 61 3184 28.32 416 417 97.7
C 14 234 2462 20.93 416 417 97.7
C 8 128 2423 20.53 416 417 97.7
D 6 225 38144 359.09 416 402 105.1
D 1 52 28991 272.0 416 402 105.1
D 7 71 20633 192.48 416 402 105.1

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