ASTROSAT CZTI

Data Quality Report

Orbit 39137

Creation date: 2024-06-27T22:01:01.568874
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/AS1A12_083T07_9000005440_39137cztM0_level2.fits modeM0/AS1A12_083T07_9000005440_39137cztM0_level2_quad_clean.evt
Size (bytes)1,022,685,120148,075,200
Size975.3 MB 141.2 MB
Events in quadrant A5,648,2231,112,063
Events in quadrant B4,567,9081,120,277
Events in quadrant C9,039,218920,028
Events in quadrant D17,827,932637,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230892
B0207692
C0336282
D0598702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10003460.459862%
B10003510.509847%
C10003141514.145756%
D10003420242.007398%

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 12659 10005 22 22 0.17% 0.22%
B 12659 10005 22 22 0.17% 0.22%
C 12659 10005 1091 1091 8.62% 10.90%
D 12659 10004 3796 3796 29.99% 37.94%

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 665873 2976.51 1105 1084 223.3
A 15 223 450237 2011.03 1105 1084 223.3
A 14 235 211140 940.5 1105 1084 223.3
B 5 172 190115 895.75 1097 1067 211.0
B 12 111 26799 121.92 1097 1067 211.0
B 11 111 24358 110.36 1097 1067 211.0
C 9 187 4692424 20335.01 994 1000 230.7
C 15 214 383187 1656.59 994 1000 230.7
C 1 16 64686 276.05 994 1000 230.7
D 12 235 11740400 54676.37 879 855 214.7
D 5 222 981467 4567.15 879 855 214.7
D 12 33 968546 4506.97 879 855 214.7

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