ASTROSAT CZTI

Data Quality Report

Orbit 34810

Creation date: 2022-03-07T03:06:23.940432
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/AS1C07_005T01_9000004992_34810cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34810cztM0_level2_quad_clean.evt
Size (bytes)432,881,280103,161,600
Size412.8 MB 98.4 MB
Events in quadrant A2,543,306709,332
Events in quadrant B3,117,346706,531
Events in quadrant C2,833,436688,716
Events in quadrant D4,250,193643,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111503
B0127712
C0114372
D0165442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5378120.223131%
B53781582.937895%
C5378400.743771%
D53782204.090740%

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 7140 5379 3 3 0.04% 0.06%
B 7140 5379 105 105 1.47% 1.95%
C 7140 5379 25 25 0.35% 0.46%
D 7140 5378 185 185 2.59% 3.44%

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 52690 414.43 624 611 125.7
A 15 174 49516 389.17 624 611 125.7
A 7 3 10170 76.07 624 611 125.7
B 5 172 480234 4118.27 616 601 116.5
B 5 63 61122 519.65 616 601 116.5
B 5 255 49009 415.65 616 601 116.5
C 15 214 246731 1768.88 602 606 139.1
C 0 10 117864 842.73 602 606 139.1
C 14 67 92040 657.13 602 606 139.1
D 8 195 894377 5596.0 585 573 159.7
D 13 249 283119 1768.99 585 573 159.7
D 2 249 243831 1523.01 585 573 159.7

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