ASTROSAT CZTI

Data Quality Report

Orbit 34744

Creation date: 2022-03-03T11:36:30.812832
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_048T04_9000004984_34744cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34744cztM0_level2_quad_clean.evt
Size (bytes)505,745,28050,546,880
Size482.3 MB 48.2 MB
Events in quadrant A3,030,615301,785
Events in quadrant B4,752,121278,641
Events in quadrant C2,802,460303,220
Events in quadrant D4,372,526275,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124223
B0175942
C0113042
D0166262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5295490.925401%
B529576714.485364%
C5295300.566572%
D52951983.739377%

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 6998 5296 21 21 0.30% 0.40%
B 6998 5296 575 575 8.22% 10.86%
C 6998 5296 16 16 0.23% 0.30%
D 6998 5296 183 183 2.62% 3.46%

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 480804 3781.36 629 617 127.0
A 10 83 48171 374.48 629 617 127.0
A 15 223 30120 232.33 629 617 127.0
B 4 171 1898014 16642.21 588 572 114.0
B 5 255 215607 1886.04 588 572 114.0
B 0 190 197739 1729.33 588 572 114.0
C 15 214 224940 1561.82 617 623 143.6
C 0 10 112510 779.02 617 623 143.6
C 14 67 42055 288.47 617 623 143.6
D 8 195 1023665 6838.44 604 586 149.6
D 2 250 624076 4167.51 604 586 149.6
D 13 249 116838 777.05 604 586 149.6

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