ASTROSAT CZTI

Data Quality Report

Orbit 20160104_G02_034T02_9000000244_level2

Creation date: 2025-10-25T17:23:35.942540
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/AS1G02_034T02_9000000244cztM0_level2.fits modeM0/AS1G02_034T02_9000000244cztM0_level2_quad_clean.evt
Size (bytes)97,211,52088,611,840
Size92.7 MB 84.5 MB
Events in quadrant A557,406475,031
Events in quadrant B555,238489,231
Events in quadrant C550,062475,887
Events in quadrant D474,152435,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496210
B0524950
C0503230
D0469890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11673620.531140%
B11673650.556841%
C11673310.265570%
D116733783.238242%

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 14093 11673 0 0 0.00% 0.00%
B 14093 11673 0 0 0.00% 0.00%
C 14093 11672 0 0 0.00% 0.00%
D 14093 11639 0 0 0.00% 0.00%

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 0 29 510 10.8 144 135 34.7
A 7 110 497 10.43 144 135 34.7
A 14 188 439 8.76 144 135 34.7
B 2 9 482 11.58 146 139 29.6
B 2 8 372 7.86 146 139 29.6
B 10 225 361 7.49 146 139 29.6
C 1 81 356 5.98 145 135 37.0
C 9 242 355 5.95 145 135 37.0
C 12 241 354 5.93 145 135 37.0
D 11 82 367 7.17 135 123 34.0
D 15 46 339 6.35 135 123 34.0
D 15 30 334 6.2 135 123 34.0

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