ASTROSAT CZTI

Data Quality Report

Orbit 18381

Creation date: 2024-06-27T17:49:04.784632
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_006T01_9000002724_18381cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18381cztM0_level2_quad_clean.evt
Size (bytes)497,419,20079,243,200
Size474.4 MB 75.6 MB
Events in quadrant A3,398,689492,891
Events in quadrant B3,457,533507,639
Events in quadrant C3,562,250478,916
Events in quadrant D4,201,645463,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140302
B0141592
C0143522
D0166222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542210.321003%
B6542290.443290%
C65421392.124732%
D65422173.317028%

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 7832 6543 4 4 0.05% 0.06%
B 7832 6543 5 5 0.06% 0.08%
C 7832 6543 56 56 0.72% 0.86%
D 7832 6543 157 157 2.00% 2.40%

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 15 174 112810 658.76 848 832 170.0
A 4 2 16390 91.53 848 832 170.0
A 8 34 10527 57.04 848 832 170.0
B 0 197 24776 147.04 860 840 162.8
B 4 173 22033 130.19 860 840 162.8
B 12 111 18253 106.97 860 840 162.8
C 0 207 235833 1246.54 814 822 188.5
C 14 238 127496 671.9 814 822 188.5
C 3 233 11334 55.76 814 822 188.5
D 1 52 933987 4755.05 811 791 196.3
D 10 70 64050 322.33 811 791 196.3
D 14 34 43409 217.16 811 791 196.3

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