ASTROSAT CZTI

Data Quality Report

Orbit 36495

Creation date: 2022-06-28T22:46:41.701213
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_049T05_9000005212_36495cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36495cztM0_level2_quad_clean.evt
Size (bytes)403,225,92072,578,880
Size384.5 MB 69.2 MB
Events in quadrant A2,560,517477,022
Events in quadrant B2,759,700466,557
Events in quadrant C2,658,148453,731
Events in quadrant D3,882,960439,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108733
B0115362
C0111182
D0150812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516190.174385%
B5161280.542531%
C5161801.550087%
D51611122.170122%

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 7163 5162 2 2 0.03% 0.04%
B 7163 5162 19 19 0.27% 0.37%
C 7163 5162 44 44 0.61% 0.85%
D 7163 5162 115 115 1.61% 2.23%

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 207951 1720.49 598 588 120.5
A 12 189 21069 169.93 598 588 120.5
A 15 223 10402 81.43 598 588 120.5
B 5 172 192871 1705.65 587 572 112.7
B 5 255 138054 1219.44 587 572 112.7
B 4 232 39670 346.79 587 572 112.7
C 0 10 236508 1796.81 564 568 131.3
C 15 214 221048 1679.08 564 568 131.3
C 13 61 3711 23.94 564 568 131.3
D 12 235 855900 6133.72 569 553 139.4
D 12 227 204932 1465.61 569 553 139.4
D 2 250 193828 1385.98 569 553 139.4

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