ASTROSAT CZTI

Data Quality Report

Orbit 35450

Creation date: 2022-04-20T23:43:19.911628
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_068T03_9000005076_35450cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35450cztM0_level2_quad_clean.evt
Size (bytes)455,302,08052,571,520
Size434.2 MB 50.1 MB
Events in quadrant A2,703,320324,449
Events in quadrant B4,010,653322,245
Events in quadrant C3,183,710305,627
Events in quadrant D3,553,055289,490

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108603
B0152782
C0122952
D0137102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4987220.441147%
B49873116.236214%
C49871643.288550%
D49873066.135953%

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 7079 4988 9 9 0.13% 0.18%
B 7079 4988 168 168 2.37% 3.37%
C 7079 4988 127 127 1.79% 2.55%
D 7079 4988 223 223 3.15% 4.47%

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 121870 951.17 636 625 127.5
A 9 143 93699 730.17 636 625 127.5
A 13 6 22453 171.24 636 625 127.5
B 4 251 817167 6969.02 624 609 117.2
B 5 236 386869 3296.59 624 609 117.2
B 5 172 134242 1140.51 624 609 117.2
C 0 10 489953 3489.33 606 612 140.2
C 15 214 205146 1458.47 606 612 140.2
C 0 207 90796 643.07 606 612 140.2
D 13 249 750907 5151.4 592 576 145.7
D 8 195 178519 1221.67 592 576 145.7
D 12 233 139658 954.87 592 576 145.7

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