ASTROSAT CZTI

Data Quality Report

Orbit 20240524_A13_074T06_9000006270_level2

Creation date: 2024-05-25T10:16:41.542266
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/AS1A13_074T06_9000006270cztM0_level2.fits modeM0/AS1A13_074T06_9000006270cztM0_level2_quad_clean.evt
Size (bytes)198,708,480159,825,600
Size189.5 MB 152.4 MB
Events in quadrant A1,168,862866,238
Events in quadrant B1,161,520891,586
Events in quadrant C1,192,096836,155
Events in quadrant D1,008,110758,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04400
B04400
C04400
D04400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0769250
B0491160
C0466440
D0569310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215928964.149685%
B215924271.977584%
C215922701.250463%
D215928884.112634%

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 27322 21592 0 0 0.00% 0.00%
B 27322 21592 0 0 0.00% 0.00%
C 27321 21586 0 0 0.00% 0.00%
D 27322 21584 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 7 110 936 8.04 305 285 81.0
A 0 29 855 7.04 305 285 81.0
A 14 79 855 7.04 305 285 81.0
B 2 9 1067 12.63 306 292 61.4
B 3 17 875 9.5 306 292 61.4
B 5 232 867 9.37 306 292 61.4
C 3 202 909 7.38 315 293 83.5
C 3 203 896 7.23 315 293 83.5
C 3 158 853 6.71 315 293 83.5
D 12 6 782 6.42 288 262 81.0
D 10 189 764 6.2 288 262 81.0
D 7 3 742 5.92 288 262 81.0

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