ASTROSAT CZTI

Data Quality Report

Orbit 18580

Creation date: 2024-06-27T17:51:52.564799
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_072T02_9000002762_18580cztM0_level2.evt modeM0/AS1A05_072T02_9000002762_18580cztM0_level2_quad_clean.evt
Size (bytes)192,130,56023,783,040
Size183.2 MB 22.7 MB
Events in quadrant A1,347,779136,433
Events in quadrant B1,343,243137,565
Events in quadrant C1,334,570132,381
Events in quadrant D1,620,430132,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055561
B055261
C054961
D064881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25101044.143426%
B2510612.430279%
C2510562.231076%
D25101465.816733%

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 3490 2510 0 0 0.00% 0.00%
B 3490 2510 2 2 0.06% 0.08%
C 3490 2510 1 1 0.03% 0.04%
D 3490 2510 86 86 2.46% 3.43%

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 14 111 43028 607.84 338 330 70.2
A 13 254 3680 47.69 338 330 70.2
A 0 226 2962 37.47 338 330 70.2
B 0 190 16067 232.13 337 328 67.8
B 0 198 8174 115.72 337 328 67.8
B 12 111 7592 107.14 337 328 67.8
C 14 238 49806 640.93 323 325 77.2
C 4 254 18494 235.34 323 325 77.2
C 9 54 3664 43.25 323 325 77.2
D 1 52 325326 4123.88 323 313 78.8
D 7 238 29657 372.33 323 313 78.8
D 10 50 27638 346.71 323 313 78.8

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