ASTROSAT CZTI

Data Quality Report

Orbit 41077

Creation date: 2024-06-27T22:24:09.758711
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/AS1A12_095T02_9000005596_41077cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41077cztM0_level2_quad_clean.evt
Size (bytes)694,710,720169,508,160
Size662.5 MB 161.7 MB
Events in quadrant A5,999,1561,148,343
Events in quadrant B7,549,7331,086,052
Events in quadrant C5,354,2131,130,662
Events in quadrant D5,978,6531,021,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243024
B0298753
C0225483
D0251613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10756190.176646%
B107568017.447006%
C10756710.660097%
D107562222.063964%

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 14904 10759 8 8 0.05% 0.07%
B 14904 10759 597 597 4.01% 5.55%
C 14904 10759 51 51 0.34% 0.47%
D 14904 10759 192 192 1.29% 1.78%

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 993744 4061.55 1200 1174 244.4
A 12 189 301036 1227.02 1200 1174 244.4
A 13 248 40310 160.14 1200 1174 244.4
B 0 186 2231177 9835.97 1165 1132 226.7
B 5 255 355482 1562.92 1165 1132 226.7
B 0 190 317880 1397.07 1165 1132 226.7
C 15 214 460819 1687.89 1169 1176 272.3
C 14 254 161437 588.51 1169 1176 272.3
C 12 249 91965 333.39 1169 1176 272.3
D 13 249 524651 1857.85 1162 1130 281.8
D 13 171 323803 1145.09 1162 1130 281.8
D 2 249 199915 705.44 1162 1130 281.8

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