ASTROSAT CZTI

Data Quality Report

Orbit 36048

Creation date: 2024-06-27T21:21:45.282434
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/AS1T04_069T01_9000005158_36048cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36048cztM0_level2_quad_clean.evt
Size (bytes)501,454,08088,911,360
Size478.2 MB 84.8 MB
Events in quadrant A2,876,059586,046
Events in quadrant B4,015,925575,529
Events in quadrant C3,566,537573,934
Events in quadrant D4,321,169537,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123513
B0158092
C0142232
D0169202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6004140.233178%
B60042884.796802%
C60041592.648235%
D60043465.762825%

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 9170 6006 1 1 0.01% 0.02%
B 9170 6006 168 168 1.83% 2.80%
C 9170 6006 110 110 1.20% 1.83%
D 9170 6006 297 297 3.24% 4.95%

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 180709 1272.74 693 678 141.5
A 13 6 8729 56.92 693 678 141.5
A 13 254 8359 54.3 693 678 141.5
B 5 236 769773 5849.45 676 658 131.5
B 0 190 370528 2813.02 676 658 131.5
B 0 213 74725 563.31 676 658 131.5
C 9 187 537272 3466.47 662 667 154.8
C 15 214 247819 1596.6 662 667 154.8
C 0 10 171616 1104.33 662 667 154.8
D 12 235 1055044 6484.41 659 642 162.6
D 12 6 190970 1170.49 659 642 162.6
D 12 17 153682 941.17 659 642 162.6

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