ASTROSAT CZTI

Data Quality Report

Orbit 36182

Creation date: 2022-06-08T05:53:58.957420
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_071T50_9000005166_36182cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36182cztM0_level2_quad_clean.evt
Size (bytes)1,030,106,880141,678,720
Size982.4 MB 135.1 MB
Events in quadrant A4,965,019942,399
Events in quadrant B5,927,235941,494
Events in quadrant C9,489,546895,863
Events in quadrant D10,111,005787,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214783
B0243542
C0349792
D0370002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10435150.143747%
B104351711.638716%
C10435105410.100623%
D10435205219.664590%

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 13271 10437 3 3 0.02% 0.03%
B 13271 10437 109 109 0.82% 1.04%
C 13271 10435 882 882 6.65% 8.45%
D 13271 10437 1929 1929 14.54% 18.48%

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 10 83 265854 1097.94 1196 1172 241.1
A 9 143 31823 127.14 1196 1172 241.1
A 13 6 22763 89.56 1196 1172 241.1
B 5 172 759569 3333.55 1180 1149 227.5
B 5 236 214199 936.44 1180 1149 227.5
B 0 213 172628 753.72 1180 1149 227.5
C 4 254 2780457 10656.07 1124 1134 260.8
C 0 207 1173386 4494.47 1124 1134 260.8
C 15 214 452982 1732.41 1124 1134 260.8
D 2 31 3938735 14887.82 1079 1048 264.5
D 13 249 550041 2075.66 1079 1048 264.5
D 2 250 361710 1363.61 1079 1048 264.5

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