ASTROSAT CZTI

Data Quality Report

Orbit 16643

Creation date: 2024-06-27T17:25:36.320587
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/AS1A05_212T01_9000002454_16643cztM0_level2.evt modeM0/AS1A05_212T01_9000002454_16643cztM0_level2_quad_clean.evt
Size (bytes)262,460,16053,127,360
Size250.3 MB 50.7 MB
Events in quadrant A1,860,049345,668
Events in quadrant B2,009,661352,334
Events in quadrant C1,874,554331,889
Events in quadrant D1,962,419328,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079302
B083921
C080041
D082281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3531932.633815%
B3531932.633815%
C3531912.577174%
D3531902.548853%

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 4707 3533 2 2 0.04% 0.06%
B 4707 3533 3 3 0.06% 0.08%
C 4707 3533 0 0 0.00% 0.00%
D 4707 3533 18 18 0.38% 0.51%

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 3 1 24794 254.21 470 461 95.7
A 15 174 12122 121.83 470 461 95.7
A 9 143 11146 111.63 470 461 95.7
B 15 35 111267 1221.12 470 460 90.7
B 0 189 41598 453.35 470 460 90.7
B 0 214 10731 113.19 470 460 90.7
C 14 238 68823 649.45 446 449 105.3
C 3 233 47618 448.03 446 449 105.3
C 7 247 18859 174.87 446 449 105.3
D 1 52 85299 766.27 452 439 110.7
D 2 16 77754 698.14 452 439 110.7
D 5 222 66495 596.47 452 439 110.7

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