ASTROSAT CZTI

Data Quality Report

Orbit 23884

Creation date: 2024-06-27T18:59:45.667208
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_142T01_9000003540_23884cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23884cztM0_level2_quad_clean.evt
Size (bytes)471,176,64072,835,200
Size449.3 MB 69.5 MB
Events in quadrant A3,400,754458,353
Events in quadrant B3,509,803462,208
Events in quadrant C3,476,811431,062
Events in quadrant D3,466,488426,115

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139312
B0142032
C0139922
D0142792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61271141.860617%
B61271492.431859%
C61262063.362716%
D6126831.354881%

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 7467 6128 0 0 0.00% 0.00%
B 7467 6128 4 4 0.05% 0.07%
C 7466 6127 19 19 0.25% 0.31%
D 7466 6127 4 4 0.05% 0.07%

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 10111 53.21 882 867 173.7
A 0 226 7508 38.23 882 867 173.7
A 3 137 6856 34.48 882 867 173.7
B 0 189 64372 391.76 876 859 162.1
B 12 111 18310 107.64 876 859 162.1
B 11 111 16165 94.41 876 859 162.1
C 0 10 149228 795.38 818 825 186.6
C 14 238 135221 720.31 818 825 186.6
C 13 61 5809 26.71 818 825 186.6
D 8 195 128564 626.39 842 818 203.9
D 1 52 104960 510.65 842 818 203.9
D 2 234 26916 127.97 842 818 203.9

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