ASTROSAT CZTI

Data Quality Report

Orbit 12887

Creation date: 2024-06-27T16:33:35.749606
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/AS1C03_001T01_9000001894_12887cztM0_level2.evt modeM0/AS1C03_001T01_9000001894_12887cztM0_level2_quad_clean.evt
Size (bytes)626,112,000141,094,080
Size597.1 MB 134.6 MB
Events in quadrant A4,124,233961,041
Events in quadrant B4,868,390920,269
Events in quadrant C3,561,772957,861
Events in quadrant D5,874,109887,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174193
B0197662
C0161912
D0228962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78641361.729400%
B78646978.863174%
C7864570.724822%
D78646328.036623%

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 8291 7868 13 13 0.16% 0.17%
B 8291 7866 249 249 3.00% 3.17%
C 8291 7868 0 0 0.00% 0.00%
D 8291 7866 415 415 5.01% 5.28%

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 1 162 172960 908.46 930 909 189.4
A 1 178 96295 503.66 930 909 189.4
A 1 161 81278 424.36 930 909 189.4
B 4 239 1169981 7058.0 882 859 165.6
B 3 209 83561 499.27 882 859 165.6
B 3 64 73195 436.69 882 859 165.6
C 3 233 8984 38.15 911 914 211.5
C 13 61 6847 28.05 911 914 211.5
C 8 222 2333 6.71 911 914 211.5
D 1 52 2323047 10869.27 884 855 213.6
D 4 95 63396 292.73 884 855 213.6
D 8 195 49232 226.43 884 855 213.6

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