ASTROSAT CZTI

Data Quality Report

Orbit 08457

Creation date: 2024-06-27T15:32:58.588061
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/AS1A03_074T01_9000001192_08457cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08457cztM0_level2_quad_clean.evt
Size (bytes)1,731,288,960303,004,800
Size1.6 GB 289.0 MB
Events in quadrant A11,918,8351,851,638
Events in quadrant B13,120,5731,866,753
Events in quadrant C11,688,5181,907,341
Events in quadrant D14,021,1151,837,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05080
B05080
C05080
D05080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05190516
B05484415
C0518119
D05844421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249046972.798747%
B249058373.360771%
C249074841.943229%
D249018253.313120%

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 28599 24913 6 6 0.02% 0.02%
B 28599 24911 64 64 0.22% 0.26%
C 28599 24916 0 0 0.00% 0.00%
D 28599 24914 222 222 0.78% 0.89%

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 13 251 66249 101.43 3068 2996 623.6
A 0 226 28578 41.02 3068 2996 623.6
A 12 194 27416 39.16 3068 2996 623.6
B 5 255 338748 571.01 3062 2982 588.0
B 11 51 210357 352.67 3062 2982 588.0
B 4 48 208355 349.26 3062 2982 588.0
C 13 61 22585 28.39 2991 2997 690.0
C 8 222 14511 16.69 2991 2997 690.0
C 7 221 9294 9.13 2991 2997 690.0
D 1 52 1843555 2595.95 2985 2909 709.0
D 2 152 260393 363.14 2985 2909 709.0
D 11 129 228242 317.8 2985 2909 709.0

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