ASTROSAT CZTI

Data Quality Report

Orbit 28128

Creation date: 2024-06-27T19:48:23.381540
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_090T14_9000004064_28128cztM0_level2.evt modeM0/AS1A10_090T14_9000004064_28128cztM0_level2_quad_clean.evt
Size (bytes)259,035,84052,015,680
Size247.0 MB 49.6 MB
Events in quadrant A1,287,081366,520
Events in quadrant B1,479,691366,780
Events in quadrant C1,334,495345,847
Events in quadrant D3,552,270296,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056190
B061460
C057700
D0124460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A279210.035817%
B279240.143266%
C2792140.501433%
D279266423.782235%

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 2792 2792 0 0 0.00% 0.00%
B 2792 2792 2 2 0.07% 0.07%
C 2792 2792 2 2 0.07% 0.07%
D 2792 2792 609 609 21.81% 21.81%

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 15 174 7302 103.24 331 325 67.6
A 13 254 4105 55.93 331 325 67.6
A 3 137 3064 40.53 331 325 67.6
B 15 32 108823 1733.83 322 314 62.6
B 5 255 36610 579.96 322 314 62.6
B 10 246 34893 552.53 322 314 62.6
C 3 233 65833 903.88 308 309 72.5
C 14 238 51883 711.44 308 309 72.5
C 15 208 9733 129.99 308 309 72.5
D 1 52 1646882 24066.89 284 276 68.4
D 7 80 484347 7075.21 284 276 68.4
D 12 1 139059 2028.46 284 276 68.4

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