ASTROSAT CZTI

Data Quality Report

Orbit 35585

Creation date: 2022-04-28T12:41:52.276478
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/AS1A10_071T01_9000005096_35585cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35585cztM0_level2_quad_clean.evt
Size (bytes)456,814,08055,745,280
Size435.7 MB 53.2 MB
Events in quadrant A3,881,089300,692
Events in quadrant B3,331,121335,297
Events in quadrant C3,273,641331,643
Events in quadrant D2,960,070319,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152643
B0136332
C0129902
D0126112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57234317.531015%
B57231843.215097%
C57231051.834702%
D5723470.821248%

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 7098 5724 366 366 5.16% 6.39%
B 7098 5724 97 97 1.37% 1.69%
C 7098 5724 82 82 1.16% 1.43%
D 7098 5724 39 39 0.55% 0.68%

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 15 169 1277276 9767.01 635 621 130.7
A 10 83 134856 1026.96 635 621 130.7
A 13 6 17843 131.76 635 621 130.7
B 5 172 664319 5214.83 654 635 127.3
B 4 232 63598 494.73 654 635 127.3
B 12 111 16367 123.61 654 635 127.3
C 0 10 497407 3310.6 643 647 150.1
C 15 214 252077 1675.63 643 647 150.1
C 9 187 6380 38.21 643 647 150.1
D 13 249 140100 875.76 645 627 159.3
D 2 249 102452 639.37 645 627 159.3
D 2 153 48544 300.87 645 627 159.3

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