ASTROSAT CZTI

Data Quality Report

Orbit 27742

Creation date: 2024-06-27T19:43:46.110819
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/AS1A09_038T44_9000003996_27742cztM0_level2.evt modeM0/AS1A09_038T44_9000003996_27742cztM0_level2_quad_clean.evt
Size (bytes)476,948,160111,594,240
Size454.9 MB 106.4 MB
Events in quadrant A3,078,597751,293
Events in quadrant B3,004,523768,977
Events in quadrant C3,941,470724,884
Events in quadrant D4,007,226710,145

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131630
B0128170
C0155380
D0158570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60791893.109064%
B60791602.632012%
C60793225.296924%
D60792974.885672%

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 6463 6078 39 39 0.60% 0.64%
B 6463 6078 0 0 0.00% 0.00%
C 6463 6078 61 61 0.94% 1.00%
D 6463 6078 162 162 2.51% 2.67%

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 0 13 278513 1884.48 722 705 147.4
A 13 254 10993 69.79 722 705 147.4
A 10 67 7474 45.92 722 705 147.4
B 0 229 85886 615.31 721 701 138.4
B 0 190 34912 247.11 721 701 138.4
B 0 230 24856 174.48 721 701 138.4
C 3 233 1092605 6701.41 690 692 162.9
C 14 238 110681 675.04 690 692 162.9
C 15 208 50076 303.08 690 692 162.9
D 1 52 1074289 6401.01 696 674 167.7
D 2 250 174521 1036.49 696 674 167.7
D 7 80 34087 199.21 696 674 167.7

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