ASTROSAT CZTI

Data Quality Report

Orbit 35307

Creation date: 2022-04-09T17:47:16.416503
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_023T01_9000005058_35307cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35307cztM0_level2_quad_clean.evt
Size (bytes)633,709,44057,631,680
Size604.4 MB 55.0 MB
Events in quadrant A4,419,116359,684
Events in quadrant B7,369,997307,274
Events in quadrant C3,026,800368,947
Events in quadrant D4,026,998346,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166043
B0254662
C0118352
D0154412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51652204.259439%
B5165188336.456922%
C51651342.594385%
D51652154.162633%

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 7288 5166 228 228 3.13% 4.41%
B 7287 5165 1484 1484 20.37% 28.73%
C 7288 5166 97 97 1.33% 1.88%
D 7288 5166 201 201 2.76% 3.89%

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 15 169 1862895 14810.4 628 617 125.7
A 10 83 93293 737.04 628 617 125.7
A 13 6 14532 110.66 628 617 125.7
B 5 236 2895277 28529.6 538 525 101.5
B 5 172 2327782 22936.58 538 525 101.5
B 4 232 26472 255.72 538 525 101.5
C 0 10 406642 2927.11 603 609 138.7
C 15 214 214851 1544.48 603 609 138.7
C 3 233 42150 299.47 603 609 138.7
D 12 235 485316 3331.08 606 590 145.5
D 8 195 350625 2405.47 606 590 145.5
D 7 80 305489 2095.29 606 590 145.5

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