ASTROSAT CZTI

Data Quality Report

Orbit 01150

Creation date: 2024-06-27T14:08:17.353392
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/AS1P01_997T03_9000000216_01150cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01150cztM0_level2_quad_clean.evt
Size (bytes)1,143,486,720104,509,440
Size1.1 GB 99.7 MB
Events in quadrant A8,190,616685,528
Events in quadrant B8,662,666680,486
Events in quadrant C9,762,096652,444
Events in quadrant D7,550,414657,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293472
B0307131
C0339641
D0274741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701120.028527%
B7011150.213950%
C70111512.153758%
D7011130.185423%

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 7546 7012 131 131 1.74% 1.87%
B 7546 7012 196 196 2.60% 2.80%
C 7546 7011 654 654 8.67% 9.33%
D 7546 7012 108 108 1.43% 1.54%

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 12 243 9260 13.91 2133 2146 511.3
A 3 111 6875 9.25 2133 2146 511.3
A 11 79 6743 8.99 2133 2146 511.3
B 10 252 77094 142.71 2228 2238 524.5
B 5 249 20779 35.35 2228 2238 524.5
B 15 22 19801 33.48 2228 2238 524.5
C 12 206 1212219 2107.92 2054 2129 574.1
C 15 241 322572 558.2 2054 2129 574.1
C 9 52 127235 217.93 2054 2129 574.1
D 13 138 33810 51.66 1988 2060 614.6
D 13 252 26253 39.36 1988 2060 614.6
D 10 125 23193 34.38 1988 2060 614.6

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