ASTROSAT CZTI

Data Quality Report

Orbit 26937

Creation date: 2024-06-27T19:34:42.515017
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/AS1A09_134T01_9000003896_26937cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26937cztM0_level2_quad_clean.evt
Size (bytes)876,133,44072,046,080
Size835.5 MB 68.7 MB
Events in quadrant A12,682,397261,716
Events in quadrant B5,030,867504,039
Events in quadrant C3,579,046500,381
Events in quadrant D4,803,515461,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421660
B0191240
C0143870
D0184630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6483486675.057844%
B64834446.848681%
C6483791.218572%
D64822864.412218%

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 7853 6483 3951 3951 50.31% 60.94%
B 7853 6484 290 290 3.69% 4.47%
C 7853 6484 2 2 0.03% 0.03%
D 7852 6483 204 204 2.60% 3.15%

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 14 235 10678674 109071.63 498 490 97.9
A 0 13 40117 404.76 498 490 97.9
A 8 192 33103 333.12 498 490 97.9
B 0 189 1010262 6201.06 878 861 162.8
B 10 245 396108 2428.12 878 861 162.8
B 10 246 125913 768.23 878 861 162.8
C 14 238 141756 710.35 865 875 198.3
C 0 207 43473 214.79 865 875 198.3
C 15 208 23324 113.19 865 875 198.3
D 1 52 782170 3929.4 846 826 198.8
D 7 80 332843 1669.72 846 826 198.8
D 2 250 274210 1374.85 846 826 198.8

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