ASTROSAT CZTI

Data Quality Report

Orbit 38833

Creation date: 2024-06-27T21:57:36.107266
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_9000005406_38833cztM0_level2.fits modeM0/AS1A12_083T07_9000005406_38833cztM0_level2_quad_clean.evt
Size (bytes)136,915,20036,204,480
Size130.6 MB 34.5 MB
Events in quadrant A1,193,735245,448
Events in quadrant B1,343,571238,822
Events in quadrant C1,070,917234,860
Events in quadrant D1,287,045218,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049071
B054251
C044911
D052031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219170.319489%
B21911094.974897%
C219140.182565%
D2191371.688727%

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 2191 2191 2 2 0.09% 0.09%
B 2191 2191 75 75 3.42% 3.42%
C 2191 2191 3 3 0.14% 0.14%
D 2191 2191 34 34 1.55% 1.55%

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 196825 3669.77 253 247 53.6
A 13 248 6416 115.16 253 247 53.6
A 13 6 3750 65.4 253 247 53.6
B 5 184 189103 3822.76 245 238 49.4
B 15 85 73776 1488.46 245 238 49.4
B 4 81 65387 1318.66 245 238 49.4
C 15 214 91104 1541.22 245 246 59.0
C 0 10 11555 191.83 245 246 59.0
C 15 208 7121 116.62 245 246 59.0
D 2 249 129573 2094.85 248 241 61.7
D 12 233 51074 823.37 248 241 61.7
D 5 222 45030 725.47 248 241 61.7

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