ASTROSAT CZTI

Data Quality Report

Orbit 17436

Creation date: 2024-06-27T17:36:30.864626
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/AS1A05_198T01_9000002578_17436cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17436cztM0_level2_quad_clean.evt
Size (bytes)525,911,04071,052,480
Size501.5 MB 67.8 MB
Events in quadrant A3,391,786424,243
Events in quadrant B3,504,412428,518
Events in quadrant C3,541,679412,610
Events in quadrant D5,024,466408,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144162
B0146002
C0144412
D0195462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6856811.181447%
B68561001.458576%
C68561131.648191%
D68564636.753209%

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 7766 6857 8 8 0.10% 0.12%
B 7766 6856 16 16 0.21% 0.23%
C 7766 6856 0 0 0.00% 0.00%
D 7766 6856 299 299 3.85% 4.36%

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 10 253 130699 751.4 845 826 172.8
A 4 2 9561 50.54 845 826 172.8
A 0 226 7437 38.25 845 826 172.8
B 0 197 76304 467.32 845 823 161.5
B 7 220 75105 459.9 845 823 161.5
B 0 189 19877 117.97 845 823 161.5
C 5 218 155443 805.54 810 813 192.0
C 14 238 124502 644.35 810 813 192.0
C 3 233 46362 237.29 810 813 192.0
D 1 52 864553 4389.51 804 780 196.8
D 13 232 847026 4300.44 804 780 196.8
D 13 189 207649 1051.26 804 780 196.8

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