ASTROSAT CZTI

Data Quality Report

Orbit 36124

Creation date: 2022-08-10T16:43:21.470874
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/AS1T04_069T01_9000005158_36124cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36124cztM0_level2_quad_clean.evt
Size (bytes)1,119,015,360140,852,160
Size1.0 GB 134.3 MB
Events in quadrant A5,302,739941,484
Events in quadrant B7,187,550922,594
Events in quadrant C6,116,154904,684
Events in quadrant D14,564,202757,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226125
B02832712
C02475012
D05051399

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02190
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10666600.562535%
B106627647.165635%
C106602121.988743%
D10653276425.945743%

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 13502 10669 34 34 0.25% 0.32%
B 13502 10668 495 495 3.67% 4.64%
C 13502 10667 186 186 1.38% 1.74%
D 13502 10666 3103 3103 22.98% 29.09%

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 298695 1190.93 1225 1200 249.8
A 9 143 124408 493.22 1225 1200 249.8
A 15 223 119378 473.09 1225 1200 249.8
B 5 172 1949157 8618.13 1173 1142 226.0
B 4 232 239138 1052.91 1173 1142 226.0
B 0 190 140880 618.21 1173 1142 226.0
C 0 207 604123 2214.48 1168 1177 272.3
C 15 214 445590 1632.22 1168 1177 272.3
C 9 187 321378 1176.02 1168 1177 272.3
D 10 203 7154649 26703.59 1094 1065 267.9
D 12 17 803146 2994.09 1094 1065 267.9
D 2 249 681550 2540.18 1094 1065 267.9

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