ASTROSAT CZTI

Data Quality Report

Orbit 33095

Creation date: 2024-06-27T20:44:48.667071
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/AS1A11_008T06_9000004762_33095cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33095cztM0_level2_quad_clean.evt
Size (bytes)669,991,68069,514,560
Size639.0 MB 66.3 MB
Events in quadrant A2,657,125456,790
Events in quadrant B3,895,253436,416
Events in quadrant C3,335,346447,314
Events in quadrant D10,004,380351,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118953
B0155902
C0139562
D0337832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A588480.135962%
B58844096.951054%
C58841372.328348%
D5884232039.428960%

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 8809 5886 1 1 0.01% 0.02%
B 8809 5886 262 262 2.97% 4.45%
C 8809 5886 103 103 1.17% 1.75%
D 8809 5886 2198 2198 24.95% 37.34%

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 13 254 11600 78.98 681 667 138.4
A 15 169 9940 66.99 681 667 138.4
A 13 6 7329 48.13 681 667 138.4
B 5 172 792925 6289.42 661 645 126.0
B 5 200 216088 1710.27 661 645 126.0
B 0 189 116834 922.35 661 645 126.0
C 8 111 214524 1406.7 657 663 152.0
C 7 221 197943 1297.64 657 663 152.0
C 0 10 142702 934.28 657 663 152.0
D 7 223 5162092 33287.09 588 576 155.1
D 8 195 1038291 6692.32 588 576 155.1
D 12 218 635152 4092.44 588 576 155.1

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