ASTROSAT CZTI

Data Quality Report

Orbit 37974

Creation date: 2024-06-27T21:46:52.488906
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/AS1A11_082T01_9000005356_37974cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37974cztM0_level2_quad_clean.evt
Size (bytes)428,371,20073,175,040
Size408.5 MB 69.8 MB
Events in quadrant A5,642,199459,144
Events in quadrant B3,454,791467,011
Events in quadrant C2,929,331463,620
Events in quadrant D3,380,423420,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210143
B0141562
C0123252
D0138712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5802611.051362%
B58021242.137194%
C5802300.517063%
D58021192.051017%

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 7175 5804 34 34 0.47% 0.59%
B 7175 5804 80 80 1.11% 1.38%
C 7175 5804 13 13 0.18% 0.22%
D 7175 5804 108 108 1.51% 1.86%

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 15 222 2584346 19543.81 648 637 132.2
A 10 83 414477 3130.39 648 637 132.2
A 12 16 69991 524.61 648 637 132.2
B 5 184 379451 3063.73 647 631 123.6
B 5 200 182963 1474.62 647 631 123.6
B 4 81 98444 791.07 647 631 123.6
C 15 214 248862 1675.89 636 639 148.1
C 0 10 146704 986.17 636 639 148.1
C 14 254 35989 238.67 636 639 148.1
D 2 249 253819 1639.29 631 614 154.5
D 10 199 206479 1332.8 631 614 154.5
D 12 233 176438 1138.31 631 614 154.5

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