ASTROSAT CZTI

Data Quality Report

Orbit 06949

Creation date: 2024-06-27T15:13:39.557360
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/AS1A02_165T06_9000000952_06949cztM0_level2.evt modeM0/AS1A02_165T06_9000000952_06949cztM0_level2_quad_clean.evt
Size (bytes)263,407,68047,134,080
Size251.2 MB 45.0 MB
Events in quadrant A1,801,749293,807
Events in quadrant B2,088,570295,791
Events in quadrant C1,795,055295,705
Events in quadrant D2,044,326285,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077572
B086381
C077581
D085331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36191153.177673%
B36192095.775076%
C36191103.039514%
D36191574.338215%

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 4714 3620 0 0 0.00% 0.00%
B 4714 3620 52 52 1.10% 1.44%
C 4714 3620 0 0 0.00% 0.00%
D 4714 3620 55 55 1.17% 1.52%

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 0 226 4338 40.48 466 455 95.9
A 12 194 4120 38.21 466 455 95.9
A 4 2 2885 25.33 466 455 95.9
B 0 219 207763 2286.25 462 451 90.7
B 0 228 65913 721.92 462 451 90.7
B 12 111 9163 96.08 462 451 90.7
C 13 61 3595 28.93 459 462 108.3
C 7 220 2648 20.19 459 462 108.3
C 10 22 1357 8.27 459 462 108.3
D 2 14 232045 2024.61 457 442 114.4
D 2 152 22762 195.12 457 442 114.4
D 7 55 17268 147.09 457 442 114.4

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