ASTROSAT CZTI

Data Quality Report

Orbit 15018

Creation date: 2024-06-27T17:02:36.294310
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/AS1T02_057T01_9000002212_15018cztM0_level2.evt modeM0/AS1T02_057T01_9000002212_15018cztM0_level2_quad_clean.evt
Size (bytes)1,267,963,200266,486,400
Size1.2 GB 254.1 MB
Events in quadrant A10,951,3051,720,371
Events in quadrant B9,371,4911,731,617
Events in quadrant C8,518,2261,705,235
Events in quadrant D8,330,6711,661,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0446954
B0399863
C0370583
D0380113

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181832951.622395%
B181833301.814882%
C18183870.478469%
D181841680.923889%

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 20254 18186 90 90 0.44% 0.49%
B 20254 18186 108 108 0.53% 0.59%
C 20254 18186 0 0 0.00% 0.00%
D 20255 18188 59 59 0.29% 0.32%

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 15 239 1316842 3110.47 2120 2078 422.7
A 1 162 552122 1301.29 2120 2078 422.7
A 1 178 288520 677.66 2120 2078 422.7
B 3 64 502305 1257.36 2117 2063 397.9
B 0 245 177241 440.31 2117 2063 397.9
B 0 197 116794 288.38 2117 2063 397.9
C 3 233 494505 1041.88 2057 2068 472.6
C 13 61 15009 27.38 2057 2068 472.6
C 8 222 6831 10.08 2057 2068 472.6
D 12 222 159745 317.53 2059 1998 496.8
D 15 0 90154 177.45 2059 1998 496.8
D 7 38 77709 152.4 2059 1998 496.8

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