ASTROSAT CZTI

Data Quality Report

Orbit 27004

Creation date: 2024-06-27T19:35:28.404618
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/AS1A09_145T01_9000003900_27004cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27004cztM0_level2_quad_clean.evt
Size (bytes)1,725,246,720208,592,640
Size1.6 GB 198.9 MB
Events in quadrant A20,540,7041,141,463
Events in quadrant B8,911,7901,376,442
Events in quadrant C8,583,7321,319,227
Events in quadrant D13,032,8721,271,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0729510
B0368830
C0358470
D0503080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17521434224.781691%
B175222171.238443%
C175222311.318343%
D1752212277.002625%

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 19441 17521 3229 3229 16.61% 18.43%
B 19442 17522 26 26 0.13% 0.15%
C 19442 17522 0 0 0.00% 0.00%
D 19442 17522 1050 1050 5.40% 5.99%

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 14 235 9351476 23449.39 1982 1947 398.7
A 6 16 2687635 6735.93 1982 1947 398.7
A 12 16 704360 1761.71 1982 1947 398.7
B 0 189 194437 458.73 2182 2128 419.2
B 3 64 131697 309.07 2182 2128 419.2
B 12 111 51289 117.27 2182 2128 419.2
C 14 238 335059 669.88 2111 2131 497.0
C 15 208 22122 40.22 2111 2131 497.0
C 13 61 14525 24.94 2111 2131 497.0
D 11 176 2614272 5270.29 2074 2020 495.7
D 12 233 1320039 2659.14 2074 2020 495.7
D 2 250 675909 1359.59 2074 2020 495.7

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