ASTROSAT CZTI

Data Quality Report

Orbit 39411

Creation date: 2024-06-27T22:04:13.626248
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_074T01_9000005472_39411cztM0_level2.fits modeM0/AS1T05_074T01_9000005472_39411cztM0_level2_quad_clean.evt
Size (bytes)1,091,462,400166,956,480
Size1.0 GB 159.2 MB
Events in quadrant A6,387,1931,160,920
Events in quadrant B9,029,4071,096,657
Events in quadrant C8,850,5221,107,681
Events in quadrant D15,309,055947,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257544
B0341543
C0332453
D0530153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107172902.705981%
B10717122711.449100%
C107176766.307735%
D10717181916.973033%

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 13524 10720 179 179 1.32% 1.67%
B 13524 10720 1087 1087 8.04% 10.14%
C 13524 10720 604 604 4.47% 5.63%
D 13524 10720 1994 1994 14.74% 18.60%

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 13 248 999066 4192.92 1169 1145 238.0
A 10 83 776282 3256.86 1169 1145 238.0
A 7 192 30665 124.03 1169 1145 238.0
B 6 203 3411974 15501.48 1136 1100 220.0
B 4 170 517265 2345.83 1136 1100 220.0
B 5 172 436927 1980.71 1136 1100 220.0
C 15 208 3609930 13631.23 1133 1140 264.7
C 15 214 444258 1673.76 1133 1140 264.7
C 9 187 331106 1246.36 1133 1140 264.7
D 12 235 9325157 34731.48 1099 1069 268.5
D 12 227 1135773 4226.68 1099 1069 268.5
D 13 249 327373 1215.46 1099 1069 268.5

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