ASTROSAT CZTI

Data Quality Report

Orbit 19995

Creation date: 2024-06-27T18:09:50.995223
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/AS1A06_002T02_9000002982_19995cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19995cztM0_level2_quad_clean.evt
Size (bytes)571,582,080110,943,360
Size545.1 MB 105.8 MB
Events in quadrant A3,924,657713,580
Events in quadrant B4,168,353716,906
Events in quadrant C4,173,319687,993
Events in quadrant D4,489,797673,883

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171592
B0179492
C0176772
D0192462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8165740.906307%
B81651762.155542%
C81661882.302229%
D81662893.539064%

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 8774 8164 1 1 0.01% 0.01%
B 8775 8165 10 10 0.11% 0.12%
C 8775 8165 0 0 0.00% 0.00%
D 8776 8167 235 235 2.68% 2.88%

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 13 252 20646 97.22 1001 982 202.3
A 14 238 14728 67.96 1001 982 202.3
A 14 254 11688 52.93 1001 982 202.3
B 7 220 117849 605.67 998 974 193.0
B 15 33 35092 176.81 998 974 193.0
B 12 111 23675 117.64 998 974 193.0
C 3 233 219271 964.17 961 965 226.4
C 14 238 150234 659.26 961 965 226.4
C 0 207 17985 75.17 961 965 226.4
D 1 52 795296 3364.97 961 932 236.1
D 2 234 37260 153.89 961 932 236.1
D 2 120 35704 147.3 961 932 236.1

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