ASTROSAT CZTI

Data Quality Report

Orbit 06671

Creation date: 2024-06-27T15:10:06.594260
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/AS1A02_170T03_9000000910_06671cztM0_level2.evt modeM0/AS1A02_170T03_9000000910_06671cztM0_level2_quad_clean.evt
Size (bytes)642,522,24086,307,840
Size612.8 MB 82.3 MB
Events in quadrant A3,463,186626,750
Events in quadrant B3,178,141633,986
Events in quadrant C3,002,346628,264
Events in quadrant D9,388,499284,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146562
B0137651
C0133561
D0323221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6285881.400159%
B6285520.827367%
C6285490.779634%
D6285327152.044551%

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 7520 6286 16 16 0.21% 0.25%
B 7520 6286 4 4 0.05% 0.06%
C 7520 6286 0 0 0.00% 0.00%
D 7520 6286 2421 2421 32.19% 38.51%

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 14 111 408245 2588.22 782 769 157.4
A 8 15 23413 143.83 782 769 157.4
A 3 1 12769 76.22 782 769 157.4
B 4 81 61496 414.23 773 756 146.6
B 4 80 47638 319.72 773 756 146.6
B 0 214 21106 138.78 773 756 146.6
C 9 247 26371 146.58 755 760 174.7
C 1 16 24333 134.91 755 760 174.7
C 12 4 7690 39.66 755 760 174.7
D 2 33 6849847 55799.58 492 479 122.7
D 2 63 283502 2305.7 492 479 122.7
D 14 34 108489 879.92 492 479 122.7

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