ASTROSAT CZTI

Data Quality Report

Orbit 14936

Creation date: 2024-06-27T17:01:31.047662
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/AS1T02_055T01_9000002206_14936cztM0_level2.evt modeM0/AS1T02_055T01_9000002206_14936cztM0_level2_quad_clean.evt
Size (bytes)495,584,64089,470,080
Size472.6 MB 85.3 MB
Events in quadrant A2,864,868611,914
Events in quadrant B5,142,135578,611
Events in quadrant C2,681,845589,833
Events in quadrant D3,937,820535,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120292
B0191171
C0115211
D0156221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5632350.621449%
B563274713.263494%
C5632110.195312%
D56325079.002131%

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 6898 5634 4 4 0.06% 0.07%
B 6898 5634 496 496 7.19% 8.80%
C 6898 5634 0 0 0.00% 0.00%
D 6898 5634 447 447 6.48% 7.93%

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 12 189 154666 1081.14 696 682 142.4
A 3 1 23008 156.75 696 682 142.4
A 0 226 6387 40.05 696 682 142.4
B 10 16 2251404 18098.27 663 648 124.4
B 0 219 198259 1588.98 663 648 124.4
B 0 229 63132 502.43 663 648 124.4
C 3 233 110956 733.22 656 659 150.4
C 10 22 11569 72.53 656 659 150.4
C 13 61 4724 27.02 656 659 150.4
D 13 249 712773 4771.75 630 615 149.2
D 7 254 666675 4462.87 630 615 149.2
D 13 104 105332 701.65 630 615 149.2

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