ASTROSAT CZTI

Data Quality Report

Orbit 39774

Creation date: 2024-06-27T22:08:51.585026
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/AS1T05_086T01_9000005496_39774cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39774cztM0_level2_quad_clean.evt
Size (bytes)706,248,000151,839,360
Size673.5 MB 144.8 MB
Events in quadrant A5,025,0321,072,018
Events in quadrant B4,691,1561,089,201
Events in quadrant C10,551,948891,955
Events in quadrant D5,206,195945,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202572
B0194161
C0373391
D0214381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86331061.227847%
B86331471.702768%
C8633164719.077957%
D86332613.023283%

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 11619 8635 61 61 0.53% 0.71%
B 11619 8635 76 76 0.65% 0.88%
C 11619 8635 1377 1377 11.85% 15.95%
D 11619 8635 232 232 2.00% 2.69%

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 636475 3003.15 1015 997 211.6
A 13 248 237414 1117.26 1015 997 211.6
A 2 79 186781 877.98 1015 997 211.6
B 5 172 548499 2759.8 1002 980 198.4
B 0 190 93457 466.14 1002 980 198.4
B 5 255 61220 303.64 1002 980 198.4
C 9 187 5752390 26248.11 917 928 219.1
C 15 208 555137 2529.26 917 928 219.1
C 15 214 332700 1514.12 917 928 219.1
D 12 233 907945 3684.29 980 954 246.2
D 13 249 178924 722.93 980 954 246.2
D 12 227 154209 622.54 980 954 246.2

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