ASTROSAT CZTI

Data Quality Report

Orbit 06890

Creation date: 2024-06-27T15:12:45.333602
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_005T01_9000000948_06890cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06890cztM0_level2_quad_clean.evt
Size (bytes)1,694,505,600293,616,000
Size1.6 GB 280.0 MB
Events in quadrant A11,811,5501,836,288
Events in quadrant B12,159,9671,839,942
Events in quadrant C13,208,3701,813,258
Events in quadrant D12,538,3391,773,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04820
B04820
C04820
D04820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502396
B0511615
C0539575
D0528725

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A236884621.950355%
B236884551.920804%
C236885342.254306%
D236887273.069065%

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 29714 23695 24 24 0.08% 0.10%
B 29714 23695 25 25 0.08% 0.11%
C 29714 23695 139 139 0.47% 0.59%
D 29714 23695 264 264 0.89% 1.11%

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 8 15 131399 217.07 2981 2927 591.8
A 13 248 101053 165.8 2981 2927 591.8
A 13 251 70200 113.67 2981 2927 591.8
B 0 219 133399 234.37 2985 2916 556.7
B 4 48 120658 211.49 2985 2916 556.7
B 4 81 85222 147.84 2985 2916 556.7
C 9 247 1824337 2750.83 2899 2915 662.1
C 9 54 59873 86.02 2899 2915 662.1
C 13 61 22977 30.3 2899 2915 662.1
D 2 33 913683 1283.68 2908 2815 709.6
D 8 195 300667 419.76 2908 2815 709.6
D 2 14 148400 205.17 2908 2815 709.6

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