ASTROSAT CZTI

Data Quality Report

Orbit 11974

Creation date: 2024-06-27T16:20:48.928403
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/AS1A04_082T01_9000001772_11974cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11974cztM0_level2_quad_clean.evt
Size (bytes)634,003,200115,182,720
Size604.6 MB 109.8 MB
Events in quadrant A3,970,054748,383
Events in quadrant B4,785,374746,815
Events in quadrant C3,690,081735,975
Events in quadrant D6,194,534682,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174473
B0197802
C0169602
D0238952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82761151.389560%
B82762853.443693%
C8276800.966651%
D82765026.065732%

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 9227 8278 6 6 0.07% 0.07%
B 9227 8278 88 88 0.95% 1.06%
C 9227 8278 0 0 0.00% 0.00%
D 9227 8278 360 360 3.90% 4.35%

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 1 162 90413 452.05 968 946 197.9
A 1 178 42634 210.64 968 946 197.9
A 11 29 38857 191.55 968 946 197.9
B 4 239 722216 3871.1 969 943 186.3
B 15 204 99125 526.95 969 943 186.3
B 11 51 51587 271.81 969 943 186.3
C 0 207 9129 37.42 943 945 218.7
C 13 61 7057 27.95 943 945 218.7
C 14 234 3947 13.73 943 945 218.7
D 2 136 819318 3707.44 910 881 220.8
D 1 52 781838 3537.66 910 881 220.8
D 4 95 455036 2057.28 910 881 220.8

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