ASTROSAT CZTI

Data Quality Report

Orbit 42997

Creation date: 2024-06-27T22:46:42.640637
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_148T01_9000005838_42997cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42997cztM0_level2_quad_clean.evt
Size (bytes)428,572,80099,601,920
Size408.7 MB 95.0 MB
Events in quadrant A3,243,963761,297
Events in quadrant B4,715,575598,561
Events in quadrant C2,559,860733,976
Events in quadrant D4,959,121574,148

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127672
B0172412
C0104372
D0180862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4959791.593063%
B4959101320.427506%
C495930.060496%
D495983716.878403%

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 7112 4960 60 60 0.84% 1.21%
B 7112 4960 903 903 12.70% 18.21%
C 7112 4960 0 0 0.00% 0.00%
D 7112 4960 782 782 11.00% 15.77%

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 586589 4282.83 616 607 136.8
A 15 237 243013 1771.7 616 607 136.8
A 7 3 18173 128.39 616 607 136.8
B 4 81 2265912 20663.79 525 514 109.6
B 4 171 240540 2189.39 525 514 109.6
B 5 255 72820 659.54 525 514 109.6
C 15 214 203231 1345.99 598 604 150.5
C 7 220 11974 75.53 598 604 150.5
C 14 254 5560 32.92 598 604 150.5
D 1 47 1202867 8254.59 545 527 145.7
D 13 249 867354 5951.15 545 527 145.7
D 1 52 307540 2107.78 545 527 145.7

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