ASTROSAT CZTI

Data Quality Report

Orbit 23578

Creation date: 2024-06-27T18:56:21.525285
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/AS1A07_011T01_9000003482_23578cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23578cztM0_level2_quad_clean.evt
Size (bytes)440,449,920104,840,640
Size420.0 MB 100.0 MB
Events in quadrant A3,012,288695,401
Events in quadrant B3,250,360720,923
Events in quadrant C3,354,397669,029
Events in quadrant D3,301,218657,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128872
B0135814
C0138632
D0141522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192280.452196%
B6191560.904539%
C61921893.052326%
D6192450.726744%

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 7497 6192 0 0 0.00% 0.00%
B 7497 6192 5 5 0.07% 0.08%
C 7497 6192 90 90 1.20% 1.45%
D 7497 6192 17 17 0.23% 0.27%

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 13 254 10572 63.1 780 765 155.4
A 0 226 6797 38.81 780 765 155.4
A 3 137 6458 36.63 780 765 155.4
B 0 189 84015 573.48 788 770 145.2
B 0 229 25862 172.86 788 770 145.2
B 0 230 20713 137.39 788 770 145.2
C 0 10 264752 1556.93 741 748 169.6
C 14 238 121377 711.39 741 748 169.6
C 10 9 34083 196.59 741 748 169.6
D 9 85 182552 1002.94 750 728 181.3
D 1 52 139187 763.74 750 728 181.3
D 12 233 74872 408.98 750 728 181.3

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