ASTROSAT CZTI

Data Quality Report

Orbit 34691

Creation date: 2022-02-27T04:58:01.974516
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/AS1A07_093T16_9000004966_34691cztM0_level2.evt modeM0/AS1A07_093T16_9000004966_34691cztM0_level2_quad_clean.evt
Size (bytes)605,030,40098,593,920
Size577.0 MB 94.0 MB
Events in quadrant A2,988,471669,331
Events in quadrant B4,791,548643,971
Events in quadrant C3,112,133658,725
Events in quadrant D7,008,356577,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130982
B0184032
C0129172
D0251472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249240.384061%
B62496069.697552%
C6249200.320051%
D624997715.634502%

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 8843 6251 11 11 0.12% 0.18%
B 8843 6250 355 355 4.01% 5.68%
C 8843 6251 11 11 0.12% 0.18%
D 8843 6251 795 795 8.99% 12.72%

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 15 174 89892 622.83 715 700 143.2
A 10 83 53120 366.05 715 700 143.2
A 9 143 43446 298.5 715 700 143.2
B 5 255 1057578 8049.72 683 667 131.3
B 5 172 875598 6663.71 683 667 131.3
B 0 190 70705 533.43 683 667 131.3
C 15 214 266259 1636.42 697 701 162.3
C 0 10 68864 420.03 697 701 162.3
C 14 67 38738 234.39 697 701 162.3
D 8 195 2049728 12701.72 657 637 161.3
D 7 38 1524271 9444.56 657 637 161.3
D 2 250 300721 1860.13 657 637 161.3

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