ASTROSAT CZTI

Data Quality Report

Orbit 29553

Creation date: 2024-06-27T20:05:26.435608
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/AS1A10_104T02_9000004258_29553cztM0_level2.evt modeM0/AS1A10_104T02_9000004258_29553cztM0_level2_quad_clean.evt
Size (bytes)863,262,720158,855,040
Size823.3 MB 151.5 MB
Events in quadrant A4,054,1841,095,893
Events in quadrant B4,332,7531,130,839
Events in quadrant C4,541,8661,031,618
Events in quadrant D12,632,583953,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176952
B0184212
C0188172
D0436212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8633790.915093%
B86341411.633079%
C86347638.837155%
D8634147317.060459%

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 10113 8634 0 0 0.00% 0.00%
B 10114 8636 32 32 0.32% 0.37%
C 10114 8635 0 0 0.00% 0.00%
D 10114 8634 1018 1018 10.07% 11.79%

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 36290 167.06 1041 1017 211.1
A 13 254 17146 76.39 1041 1017 211.1
A 3 137 10435 44.61 1041 1017 211.1
B 0 156 93048 465.73 1036 1008 197.6
B 5 255 73998 369.34 1036 1008 197.6
B 0 189 38749 190.97 1036 1008 197.6
C 14 238 353794 1564.04 964 969 225.6
C 14 254 274689 1213.38 964 969 225.6
C 7 247 93776 411.41 964 969 225.6
D 8 195 6947419 30353.19 959 933 228.9
D 7 80 1212402 5293.6 959 933 228.9
D 13 153 326012 1420.46 959 933 228.9

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