ASTROSAT CZTI

Data Quality Report

Orbit 18021

Creation date: 2024-06-27T17:43:58.244611
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_159T01_9000002678_18021cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18021cztM0_level2_quad_clean.evt
Size (bytes)543,867,840124,960,320
Size518.7 MB 119.2 MB
Events in quadrant A3,625,248869,360
Events in quadrant B3,642,337872,073
Events in quadrant C3,687,133812,746
Events in quadrant D5,075,483776,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148282
B0148352
C0151702
D0192942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65041201.845018%
B65041121.722017%
C65041342.060271%
D65043725.719557%

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 7794 6505 22 22 0.28% 0.34%
B 7794 6505 13 13 0.17% 0.20%
C 7794 6505 0 0 0.00% 0.00%
D 7794 6505 228 228 2.93% 3.50%

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 4 2 102613 562.34 907 894 180.9
A 15 174 34694 186.86 907 894 180.9
A 0 226 7855 38.48 907 894 180.9
B 7 220 77542 457.22 892 874 167.7
B 5 172 29340 169.76 892 874 167.7
B 12 111 18434 104.72 892 874 167.7
C 3 233 209262 1072.45 842 852 194.3
C 14 238 134616 688.33 842 852 194.3
C 0 207 46773 236.3 842 852 194.3
D 5 222 975271 4688.99 852 832 207.8
D 9 68 442121 2123.48 852 832 207.8
D 9 64 180360 863.89 852 832 207.8

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