ASTROSAT CZTI

Data Quality Report

Orbit 25727

Creation date: 2024-06-27T19:20:51.135759
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/AS1A09_008T06_9000003748_25727cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25727cztM0_level2_quad_clean.evt
Size (bytes)1,010,085,120168,802,560
Size963.3 MB 161.0 MB
Events in quadrant A6,155,7101,077,406
Events in quadrant B6,382,0601,100,373
Events in quadrant C6,205,1271,059,971
Events in quadrant D10,977,036984,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266060
B0271580
C0266600
D0416460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128561771.376789%
B128502732.124514%
C128692271.763929%
D1285311709.102933%

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 13550 12941 0 0 0.00% 0.00%
B 13551 12932 27 27 0.20% 0.21%
C 13551 12946 0 0 0.00% 0.00%
D 13551 12937 750 750 5.53% 5.80%

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 13 36020 108.11 1577 1545 318.9
A 6 16 35824 107.49 1577 1545 318.9
A 13 254 20888 60.66 1577 1545 318.9
B 4 171 87461 286.58 1570 1529 299.9
B 3 112 56938 184.78 1570 1529 299.9
B 12 111 37272 119.2 1570 1529 299.9
C 14 238 240274 673.36 1511 1518 354.6
C 3 233 38939 105.54 1511 1518 354.6
C 1 16 21998 57.76 1511 1518 354.6
D 1 52 2669438 7263.68 1490 1443 367.3
D 7 80 1965483 5347.15 1490 1443 367.3
D 8 195 306302 829.99 1490 1443 367.3

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