ASTROSAT CZTI

Data Quality Report

Orbit 32861

Creation date: 2024-06-27T20:42:45.462699
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/AS1A11_005T04_9000004742_32861cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32861cztM0_level2_quad_clean.evt
Size (bytes)479,024,64043,646,400
Size456.8 MB 41.6 MB
Events in quadrant A2,142,206271,719
Events in quadrant B2,954,077265,598
Events in quadrant C2,259,942269,612
Events in quadrant D6,837,114188,510

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09394102
B011831148
C0962759
D023791336

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A462440.086505%
B46241904.108997%
C463870.150927%
D4592124127.025261%

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 6670 4658 0 0 0.00% 0.00%
B 6670 4656 131 131 1.96% 2.81%
C 6670 4663 6 6 0.09% 0.13%
D 6669 4648 1106 1106 16.58% 23.80%

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 13 254 8239 69.87 552 540 110.2
A 3 137 4989 40.37 552 540 110.2
A 0 226 4733 38.05 552 540 110.2
B 5 172 494402 4800.74 544 532 102.9
B 15 85 100107 967.93 544 532 102.9
B 0 190 67396 649.96 544 532 102.9
C 3 233 71272 575.14 535 540 123.0
C 14 67 41909 336.38 535 540 123.0
C 0 10 28354 226.16 535 540 123.0
D 12 227 2684711 23695.51 469 456 113.3
D 2 16 785380 6928.99 469 456 113.3
D 8 195 654024 5769.43 469 456 113.3

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