ASTROSAT CZTI

Data Quality Report

Orbit 04894

Creation date: 2024-06-27T14:48:32.572681
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/AS1G05_237T01_9000000620_04894cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04894cztM0_level2_quad_clean.evt
Size (bytes)524,024,64067,803,840
Size499.7 MB 64.7 MB
Events in quadrant A3,448,821403,629
Events in quadrant B3,869,867401,189
Events in quadrant C3,225,132399,200
Events in quadrant D4,868,867379,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144604
B0158853
C0139573
D0189423

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67341512.242352%
B67341512.242352%
C67341011.499851%
D67345998.895159%

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 7699 6735 22 22 0.29% 0.33%
B 7699 6735 11 11 0.14% 0.16%
C 7699 6735 0 0 0.00% 0.00%
D 7699 6735 400 400 5.20% 5.94%

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 0 50 118114 669.92 848 830 175.1
A 8 15 29029 161.07 848 830 175.1
A 13 251 24175 133.34 848 830 175.1
B 15 204 314078 1902.86 852 834 164.6
B 4 48 56405 337.58 852 834 164.6
B 15 255 45407 270.77 852 834 164.6
C 14 67 12089 58.94 822 829 191.0
C 13 61 6856 31.55 822 829 191.0
C 12 4 4615 19.82 822 829 191.0
D 1 52 542399 2762.7 801 779 196.0
D 1 31 495164 2521.77 801 779 196.0
D 13 235 256790 1305.87 801 779 196.0

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