ASTROSAT CZTI

Data Quality Report

Orbit 35563

Creation date: 2022-04-27T00:23:38.469752
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/AS1T05_026T01_9000005092_35563cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35563cztM0_level2_quad_clean.evt
Size (bytes)431,519,04096,816,960
Size411.5 MB 92.3 MB
Events in quadrant A3,388,903638,000
Events in quadrant B2,955,904650,787
Events in quadrant C2,981,189652,838
Events in quadrant D3,382,407619,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139323
B0122472
C0120662
D0135832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5305160.301602%
B53051262.375118%
C53051262.375118%
D53051252.356268%

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 7097 5306 2 2 0.03% 0.04%
B 7097 5306 93 93 1.31% 1.75%
C 7097 5306 81 81 1.14% 1.53%
D 7097 5306 85 85 1.20% 1.60%

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 15 169 830569 6649.47 617 604 124.8
A 10 83 140321 1119.38 617 604 124.8
A 13 6 18960 147.06 617 604 124.8
B 5 200 282128 2405.69 614 597 117.0
B 5 172 171177 1457.61 614 597 117.0
B 0 189 34499 289.69 614 597 117.0
C 0 10 334888 2361.06 612 617 141.6
C 15 214 238222 1678.28 612 617 141.6
C 14 67 18375 125.43 612 617 141.6
D 8 195 303123 2055.51 609 593 147.2
D 13 249 162010 1096.73 609 593 147.2
D 12 233 139347 942.75 609 593 147.2

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