ASTROSAT CZTI

Data Quality Report

Orbit 33867

Creation date: 2024-06-27T20:53:28.208459
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/AS1A11_046T03_9000004834_33867cztM0_level2.evt modeM0/AS1A11_046T03_9000004834_33867cztM0_level2_quad_clean.evt
Size (bytes)957,162,240126,443,520
Size912.8 MB 120.6 MB
Events in quadrant A8,290,876699,982
Events in quadrant B5,528,144838,518
Events in quadrant C5,244,086831,894
Events in quadrant D9,254,247769,988

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312122
B0230800
C0217700
D0344340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9920189919.143145%
B99202602.620968%
C9920970.977823%
D99207407.459677%

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 25811 9922 1459 1459 5.65% 14.70%
B 25811 9922 157 157 0.61% 1.58%
C 25811 9922 64 64 0.25% 0.65%
D 25811 9922 601 601 2.33% 6.06%

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 15 169 4278903 20948.5 1029 1005 204.2
A 13 6 32484 154.15 1029 1005 204.2
A 13 254 14733 67.22 1029 1005 204.2
B 5 172 835457 3924.92 1116 1087 212.6
B 15 85 59133 273.05 1116 1087 212.6
B 0 229 40795 186.79 1116 1087 212.6
C 15 214 416648 1644.29 1096 1104 252.7
C 9 187 206188 811.51 1096 1104 252.7
C 3 233 142977 561.38 1096 1104 252.7
D 8 195 2054375 7890.86 1072 1043 260.2
D 12 235 1083641 4160.37 1072 1043 260.2
D 13 249 616183 2363.95 1072 1043 260.2

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