ASTROSAT CZTI

Data Quality Report

Orbit 33843

Creation date: 2024-06-27T20:53:16.221018
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_065T07_9000004828_33843cztM0_level2.evt modeM0/AS1A11_065T07_9000004828_33843cztM0_level2_quad_clean.evt
Size (bytes)183,421,44011,859,840
Size174.9 MB 11.3 MB
Events in quadrant A1,869,34913,856
Events in quadrant B974,00277,040
Events in quadrant C1,110,02177,466
Events in quadrant D1,495,71676,833

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065912
B039291
C044181
D055721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152953034.663179%
B1529342.223676%
C1529493.204709%
D1529996.474820%

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 3622 1530 381 381 10.52% 24.90%
B 3622 1530 24 24 0.66% 1.57%
C 3622 1530 40 40 1.10% 2.61%
D 3622 1530 66 66 1.82% 4.31%

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 1228582 36397.78 164 161 33.7
A 10 83 5081 145.78 164 161 33.7
A 13 254 1974 53.72 164 161 33.7
B 5 172 121486 2993.38 211 207 40.5
B 0 199 15436 375.88 211 207 40.5
B 12 111 4484 105.56 211 207 40.5
C 14 254 98555 2024.37 206 208 48.6
C 0 10 85212 1749.72 206 208 48.6
C 15 214 68738 1410.62 206 208 48.6
D 8 195 205361 3730.45 207 202 55.0
D 10 118 158960 2886.73 207 202 55.0
D 2 249 82434 1495.24 207 202 55.0

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