ASTROSAT CZTI

Data Quality Report

Orbit 23736

Creation date: 2024-06-27T18:58:03.239708
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_027T08_9000003514_23736cztM0_level2.evt modeM0/AS1A07_027T08_9000003514_23736cztM0_level2_quad_clean.evt
Size (bytes)490,541,76098,856,000
Size467.8 MB 94.3 MB
Events in quadrant A3,036,003661,743
Events in quadrant B3,444,419672,059
Events in quadrant C3,043,392631,206
Events in quadrant D4,910,322594,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131182
B0142332
C0130582
D0189812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222390.626808%
B6222510.819672%
C6222550.883960%
D62221782.860816%

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 7427 6222 0 0 0.00% 0.00%
B 7427 6222 4 4 0.05% 0.06%
C 7427 6222 2 2 0.03% 0.03%
D 7427 6222 124 124 1.67% 1.99%

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 11199 65.65 787 771 158.9
A 0 226 6816 38.05 787 771 158.9
A 3 137 6391 35.38 787 771 158.9
B 3 64 133729 898.8 787 771 147.9
B 0 229 86939 582.5 787 771 147.9
B 0 189 81437 545.3 787 771 147.9
C 14 238 119408 690.61 738 742 171.8
C 7 247 29884 169.6 738 742 171.8
C 0 10 10088 54.39 738 742 171.8
D 8 195 1252335 6926.08 739 717 180.7
D 1 52 409157 2260.18 739 717 180.7
D 7 238 178713 984.97 739 717 180.7

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