ASTROSAT CZTI

Data Quality Report

Orbit 20230101_A12_025T11_9000005454_level2

Creation date: 2023-01-03T11:58:54.456853
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/AS1A12_025T11_9000005454cztM0_level2.fits modeM0/AS1A12_025T11_9000005454cztM0_level2_quad_clean.evt
Size (bytes)142,312,320164,877,120
Size135.7 MB 157.2 MB
Events in quadrant A897,0041,097,490
Events in quadrant B832,6841,077,000
Events in quadrant C873,1641,048,556
Events in quadrant D554,270621,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351820
B0413620
C0355810
D01088360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16664290.174028%
B166646443.864618%
C16664490.294047%
D16664860951.662266%

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 22271 16664 0 0 0.00% 0.00%
B 22271 16642 0 0 0.00% 0.00%
C 22271 16664 0 0 0.00% 0.00%
D 22271 16622 0 0 0.00% 0.00%

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 7 110 753 8.73 233 218 61.3
A 9 19 729 8.34 233 218 61.3
A 0 29 712 8.06 233 218 61.3
B 2 9 776 12.41 220 209 45.7
B 3 80 679 10.29 220 209 45.7
B 2 8 603 8.63 220 209 45.7
C 1 81 764 8.93 230 214 61.6
C 3 203 716 8.15 230 214 61.6
C 1 80 712 8.08 230 214 61.6
D 10 113 428 6.51 157 143 43.7
D 1 3 400 5.87 157 143 43.7
D 6 38 400 5.87 157 143 43.7

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