ASTROSAT CZTI

Data Quality Report

Orbit 20166

Creation date: 2024-06-27T18:11:58.411886
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/AS1A05_180T01_9000002992_20166cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20166cztM0_level2_quad_clean.evt
Size (bytes)1,319,952,960237,582,720
Size1.2 GB 226.6 MB
Events in quadrant A8,746,6361,566,208
Events in quadrant B8,935,8161,549,073
Events in quadrant C9,761,3701,465,278
Events in quadrant D11,391,3021,451,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355413
B0361713
C0394173
D0445913

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168773762.227884%
B168783902.310700%
C168784572.707667%
D168788194.852471%

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 19872 16880 7 7 0.04% 0.04%
B 19873 16881 5 5 0.03% 0.03%
C 19873 16881 1 1 0.01% 0.01%
D 19873 16881 509 509 2.56% 3.02%

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 14 238 44005 93.14 2263 2227 448.5
A 0 226 19413 38.32 2263 2227 448.5
A 3 137 17763 34.64 2263 2227 448.5
B 0 198 98668 231.46 2224 2177 416.9
B 12 111 49495 113.51 2224 2177 416.9
B 11 111 43777 99.79 2224 2177 416.9
C 3 233 1106549 2245.45 2127 2146 491.8
C 14 238 337684 682.21 2127 2146 491.8
C 5 4 22441 41.26 2127 2146 491.8
D 1 52 2141824 4055.54 2174 2114 527.6
D 12 238 341699 643.64 2174 2114 527.6
D 11 176 226427 425.16 2174 2114 527.6

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