ASTROSAT CZTI

Data Quality Report

Orbit 20160416_G05_238T05_9000000418_level2

Creation date: 2025-10-28T23:30:24.155548
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/AS1G05_238T05_9000000418cztM0_level2.fits modeM0/AS1G05_238T05_9000000418cztM0_level2_quad_clean.evt
Size (bytes)774,432,000934,349,760
Size738.6 MB 891.1 MB
Events in quadrant A4,477,3945,573,030
Events in quadrant B4,390,1445,705,931
Events in quadrant C4,520,5185,619,392
Events in quadrant D3,848,3345,187,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02675530
B02338990
C01915070
D02200650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04890
B04890
C04890
D04900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018540
B018540
C018540
D018540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9063954796.044859%
B9063938854.286234%
C906397250.799876%
D9063914001.544589%

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 135814 90530 0 0 0.00% 0.00%
B 135814 90620 0 0 0.00% 0.00%
C 135814 90624 0 0 0.00% 0.00%
D 135814 90625 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 0 29 4544 11.54 1167 1092 299.1
A 7 110 3922 9.46 1167 1092 299.1
A 9 19 3525 8.13 1167 1092 299.1
B 2 9 3905 12.26 1162 1109 228.0
B 12 226 3288 9.56 1162 1109 228.0
B 5 128 3231 9.31 1162 1109 228.0
C 1 80 3636 7.96 1196 1108 317.5
C 1 81 3588 7.81 1196 1108 317.5
C 9 188 3166 6.48 1196 1108 317.5
D 6 44 2932 6.64 1106 1005 290.4
D 6 231 2923 6.6 1106 1005 290.4
D 7 3 2803 6.19 1106 1005 290.4

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