ASTROSAT CZTI

Data Quality Report

Orbit 23110

Creation date: 2024-06-27T18:50:02.919696
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/AS1A07_138T03_9000003412_23110cztM0_level2.evt modeM0/AS1A07_138T03_9000003412_23110cztM0_level2_quad_clean.evt
Size (bytes)1,035,944,640160,758,720
Size988.0 MB 153.3 MB
Events in quadrant A10,237,279957,130
Events in quadrant B6,132,1351,045,829
Events in quadrant C6,052,5191,003,841
Events in quadrant D8,088,244978,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388133
B0264193
C0262153
D0325753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12769160612.577336%
B127691220.955439%
C127691431.119900%
D127695424.244655%

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 14234 12770 1247 1247 8.76% 9.77%
B 14234 12770 6 6 0.04% 0.05%
C 14234 12770 3 3 0.02% 0.02%
D 14234 12771 420 420 2.95% 3.29%

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 6 16 4679648 16167.46 1439 1410 289.4
A 13 254 17167 54.45 1439 1410 289.4
A 3 137 12799 39.36 1439 1410 289.4
B 0 190 116973 402.34 1508 1469 287.1
B 12 111 35371 118.09 1508 1469 287.1
B 0 189 35330 117.95 1508 1469 287.1
C 14 238 228421 668.82 1449 1455 339.4
C 2 16 51795 148.34 1449 1455 339.4
C 0 207 51268 146.79 1449 1455 339.4
D 13 153 1076469 3064.19 1444 1401 350.8
D 1 52 502734 1428.92 1444 1401 350.8
D 12 227 399448 1134.53 1444 1401 350.8

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