ASTROSAT CZTI

Data Quality Report

Orbit 20190614_T03_120T01_9000002990_level2

Creation date: 2025-12-01T10:45:34.378137
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/AS1T03_120T01_9000002990cztM0_level2.fits modeM0/AS1T03_120T01_9000002990cztM0_level2_quad_clean.evt
Size (bytes)533,704,320713,327,040
Size509.0 MB 680.3 MB
Events in quadrant A3,273,4164,722,294
Events in quadrant B3,159,2204,723,520
Events in quadrant C3,238,6404,545,238
Events in quadrant D2,718,2203,843,806

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011160
B011160
C011160
D011160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01319110
B01267280
C01139220
D01770700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497323954.356684%
B5497311862.157423%
C549736521.186037%
D5497346208.404126%

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 60852 54945 0 0 0.00% 0.00%
B 60852 54967 0 0 0.00% 0.00%
C 60852 54972 0 0 0.00% 0.00%
D 60852 54963 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 14 188 3577 13.17 851 802 210.6
A 0 29 3243 11.59 851 802 210.6
A 14 204 3030 10.58 851 802 210.6
B 2 9 2484 10.11 836 801 166.4
B 2 8 2102 7.82 836 801 166.4
B 3 17 2087 7.73 836 801 166.4
C 2 191 2240 6.56 855 805 218.9
C 3 126 2238 6.55 855 805 218.9
C 12 241 2230 6.51 855 805 218.9
D 4 246 2138 6.81 776 709 209.9
D 3 14 2051 6.39 776 709 209.9
D 15 46 1987 6.09 776 709 209.9

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