ASTROSAT CZTI

Data Quality Report

Orbit 45505

Creation date: 2024-06-27T23:13:00.060564
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/AS1A13_054T01_9000006098_45505cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45505cztM0_level2_quad_clean.evt
Size (bytes)452,416,320110,574,720
Size431.5 MB 105.5 MB
Events in quadrant A5,570,495733,585
Events in quadrant B3,196,459767,627
Events in quadrant C3,218,224733,980
Events in quadrant D4,254,654657,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214021
B0140161
C0140841
D0170861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65321782.725046%
B65331001.530690%
C6533610.933721%
D65331952.984846%

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 7552 6533 7 7 0.09% 0.11%
B 7553 6534 33 33 0.44% 0.51%
C 7553 6534 29 29 0.38% 0.44%
D 7553 6534 125 125 1.65% 1.91%

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 10 83 2655901 17074.81 745 729 155.5
A 13 248 18140 111.97 745 729 155.5
A 2 79 10509 62.89 745 729 155.5
B 5 172 72790 483.55 752 728 149.0
B 5 171 67018 444.82 752 728 149.0
B 0 186 22040 143.01 752 728 149.0
C 14 254 230939 1316.81 745 748 174.8
C 3 233 47397 266.86 745 748 174.8
C 12 2 11186 59.71 745 748 174.8
D 1 52 373671 2048.22 731 710 182.1
D 11 241 315968 1731.33 731 710 182.1
D 2 249 306765 1680.78 731 710 182.1

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