ASTROSAT CZTI

Data Quality Report

Orbit 20600

Creation date: 2024-06-27T18:17:16.423251
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/AS1A06_003T04_9000003046_20600cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20600cztM0_level2_quad_clean.evt
Size (bytes)589,662,72095,253,120
Size562.3 MB 90.8 MB
Events in quadrant A3,554,176616,180
Events in quadrant B3,742,123625,508
Events in quadrant C3,645,314603,792
Events in quadrant D6,444,666554,000

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150402
B0156182
C0152232
D0240962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69591492.141112%
B69602413.462644%
C69602283.275862%
D69605898.462644%

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 8894 6961 11 11 0.12% 0.16%
B 8895 6962 9 9 0.10% 0.13%
C 8895 6962 0 0 0.00% 0.00%
D 8895 6961 314 314 3.53% 4.51%

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 12 16 73579 402.61 885 866 180.6
A 15 174 39605 214.5 885 866 180.6
A 5 16 23289 124.16 885 866 180.6
B 7 220 106071 621.67 884 862 169.2
B 0 190 61293 357.08 884 862 169.2
B 0 189 38095 220.01 884 862 169.2
C 8 208 142275 708.19 855 861 199.7
C 14 238 134381 668.65 855 861 199.7
C 5 112 31151 151.69 855 861 199.7
D 1 20 1707939 8331.45 840 815 204.9
D 5 222 1236951 6032.84 840 815 204.9
D 2 165 88272 426.83 840 815 204.9

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