ASTROSAT CZTI

Data Quality Report

Orbit 23015

Creation date: 2024-06-27T18:48:48.249507
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/AS1C05_002T02_9000003402_23015cztM0_level2.evt modeM0/AS1C05_002T02_9000003402_23015cztM0_level2_quad_clean.evt
Size (bytes)731,427,840126,982,080
Size697.5 MB 121.1 MB
Events in quadrant A4,454,137815,510
Events in quadrant B4,592,049844,619
Events in quadrant C4,637,633803,328
Events in quadrant D7,863,030762,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01822
B01822
C01822
D01822

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019154145
B019477168
C019581139
D029667217

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191
B0191
C0191
D0191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8929240.268787%
B8931480.537454%
C89321171.309897%
D8930120613.505039%

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 11929 8939 0 0 0.00% 0.00%
B 11929 8944 11 11 0.09% 0.12%
C 11929 8940 18 18 0.15% 0.20%
D 11929 8937 965 965 8.09% 10.80%

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 11 47 50703 218.51 1141 1123 226.9
A 13 254 11798 47.05 1141 1123 226.9
A 6 16 11350 45.07 1141 1123 226.9
B 4 216 62883 289.13 1145 1118 213.6
B 0 189 35381 160.39 1145 1118 213.6
B 12 111 25429 113.8 1145 1118 213.6
C 14 238 177913 698.16 1101 1111 253.2
C 10 9 131346 514.27 1101 1111 253.2
C 0 10 13172 47.63 1101 1111 253.2
D 1 52 3548101 14475.13 1011 983 245.0
D 13 153 220869 897.31 1011 983 245.0
D 13 174 199732 811.06 1011 983 245.0

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