ASTROSAT CZTI

Data Quality Report

Orbit 15268

Creation date: 2024-06-27T17:06:05.684199
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/AS1A04_207T01_9000002254_15268cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15268cztM0_level2_quad_clean.evt
Size (bytes)499,728,960112,063,680
Size476.6 MB 106.9 MB
Events in quadrant A3,466,884748,149
Events in quadrant B3,568,388754,122
Events in quadrant C3,918,875731,282
Events in quadrant D3,736,795704,722

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01463570
B01500661
C01626253
D01550264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529801.225302%
B6533811.239859%
C6535610.933435%
D65301672.557427%

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 7734 6537 3 3 0.04% 0.05%
B 7734 6539 3 3 0.04% 0.05%
C 7734 6541 2 2 0.03% 0.03%
D 7734 6535 101 101 1.31% 1.55%

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 12 189 123705 709.73 851 833 173.1
A 3 1 27370 153.28 851 833 173.1
A 9 143 24961 139.37 851 833 173.1
B 0 219 76284 472.57 843 824 159.7
B 0 205 48363 297.71 843 824 159.7
B 0 189 34655 211.87 843 824 159.7
C 3 233 641606 3463.69 806 812 185.0
C 3 9 121832 654.15 806 812 185.0
C 4 254 9778 48.46 806 812 185.0
D 13 172 299790 1510.33 812 790 198.0
D 2 33 127977 642.46 812 790 198.0
D 8 195 107862 540.85 812 790 198.0

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