ASTROSAT CZTI

Data Quality Report

Orbit 42996

Creation date: 2024-06-27T22:46:41.903709
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/AS1T05_148T01_9000005838_42996cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42996cztM0_level2_quad_clean.evt
Size (bytes)400,115,520109,399,680
Size381.6 MB 104.3 MB
Events in quadrant A3,358,667819,804
Events in quadrant B4,491,832681,361
Events in quadrant C2,715,526783,063
Events in quadrant D3,854,802677,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133881
B0166148
C0109981
D0147801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5016771.535088%
B501583916.729811%
C501540.079761%
D50153216.400798%

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 7140 5017 56 56 0.78% 1.12%
B 7139 5016 754 754 10.56% 15.03%
C 7139 5016 3 3 0.04% 0.06%
D 7139 5016 316 316 4.43% 6.30%

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 10 83 552045 3753.09 653 645 146.9
A 15 237 255921 1737.53 653 645 146.9
A 13 6 12394 79.97 653 645 146.9
B 4 81 1834583 15151.5 573 561 121.0
B 5 255 195381 1609.48 573 561 121.0
B 4 171 155935 1283.6 573 561 121.0
C 15 214 205526 1288.6 626 632 159.0
C 14 254 39346 243.48 626 632 159.0
C 5 250 21821 133.26 626 632 159.0
D 1 47 664576 4064.64 611 592 163.4
D 1 52 358697 2192.17 611 592 163.4
D 10 118 228717 1396.49 611 592 163.4

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