ASTROSAT CZTI

Data Quality Report

Orbit 41262

Creation date: 2024-06-27T22:26:42.665074
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/AS1A12_052T04_9000005638_41262cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41262cztM0_level2_quad_clean.evt
Size (bytes)477,731,52089,452,800
Size455.6 MB 85.3 MB
Events in quadrant A3,091,599640,096
Events in quadrant B3,497,329624,580
Events in quadrant C3,156,627620,898
Events in quadrant D7,479,479410,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127433
B0144522
C0131842
D0263582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5899120.203424%
B58992394.051534%
C5899921.559586%
D5899188932.022377%

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 7242 5900 4 4 0.06% 0.07%
B 7242 5900 196 196 2.71% 3.32%
C 7242 5900 82 82 1.13% 1.39%
D 7242 5900 1817 1817 25.09% 30.80%

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 10 83 561916 4309.85 638 624 130.2
A 6 10 27564 206.86 638 624 130.2
A 12 189 18649 138.4 638 624 130.2
B 0 186 855127 6972.11 624 607 122.6
B 0 229 78338 634.21 624 607 122.6
B 0 245 64107 518.1 624 607 122.6
C 15 214 253430 1756.83 617 619 143.9
C 0 10 246951 1711.81 617 619 143.9
C 9 54 215453 1492.92 617 619 143.9
D 1 52 5259241 42809.71 498 484 122.8
D 13 249 149314 1211.57 498 484 122.8
D 5 222 64685 522.64 498 484 122.8

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