ASTROSAT CZTI

Data Quality Report

Orbit 30797

Creation date: 2024-06-27T20:19:44.421917
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/AS1A10_071T25_9000004450_30797cztM0_level2.evt modeM0/AS1A10_071T25_9000004450_30797cztM0_level2_quad_clean.evt
Size (bytes)1,789,084,800229,691,520
Size1.7 GB 219.1 MB
Events in quadrant A8,606,2841,485,913
Events in quadrant B13,950,7221,472,954
Events in quadrant C10,952,9621,398,451
Events in quadrant D19,449,3561,343,360

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375262
B0553802
C0444282
D0706462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182171570.861832%
B182173061.679750%
C182175082.788604%
D1821813137.207158%

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 20237 18217 5 5 0.02% 0.03%
B 20237 18217 18 18 0.09% 0.10%
C 20237 18217 83 83 0.41% 0.46%
D 20238 18219 1620 1620 8.00% 8.89%

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 33016 69.0 2227 2182 446.9
A 3 137 22815 46.17 2227 2182 446.9
A 0 226 18365 36.21 2227 2182 446.9
B 6 159 5007950 11875.11 2192 2135 421.5
B 5 255 121191 282.43 2192 2135 421.5
B 0 190 61782 141.5 2192 2135 421.5
C 3 233 1963685 3928.44 2113 2128 499.3
C 0 10 378128 753.02 2113 2128 499.3
C 14 238 336717 670.09 2113 2128 499.3
D 8 195 10983380 20601.81 2107 2060 533.0
D 2 250 197682 367.0 2107 2060 533.0
D 13 174 175957 326.24 2107 2060 533.0

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