ASTROSAT CZTI

Data Quality Report

Orbit 09402

Creation date: 2024-06-27T15:45:36.003045
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/AS1G07_044T09_9000001334_09402cztM0_level2.evt modeM0/AS1G07_044T09_9000001334_09402cztM0_level2_quad_clean.evt
Size (bytes)1,332,123,840237,856,320
Size1.2 GB 226.8 MB
Events in quadrant A10,616,7081,466,152
Events in quadrant B9,106,7581,483,311
Events in quadrant C9,766,8071,484,611
Events in quadrant D9,549,1961,441,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043909320
B039949280
C042724261
D042364298

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03962
B03964
C03964
D03966

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192854072.110449%
B192883481.804231%
C192964722.446103%
D192793972.059235%

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 21781 19374 29 29 0.13% 0.15%
B 21781 19368 4 4 0.02% 0.02%
C 21781 19375 127 127 0.58% 0.66%
D 21781 19365 129 129 0.59% 0.67%

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 1554621 3371.07 2257 2205 460.5
A 13 251 163690 350.66 2257 2205 460.5
A 1 162 69884 146.96 2257 2205 460.5
B 0 219 110278 249.99 2268 2207 432.3
B 0 214 100119 226.49 2268 2207 432.3
B 12 111 49645 109.73 2268 2207 432.3
C 4 254 1136785 2230.89 2208 2216 508.6
C 13 61 16472 28.03 2208 2216 508.6
C 14 234 9451 14.23 2208 2216 508.6
D 1 52 484720 918.0 2190 2139 525.7
D 7 71 305688 577.43 2190 2139 525.7
D 8 195 142158 266.35 2190 2139 525.7

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