ASTROSAT CZTI

Data Quality Report

Orbit 07507

Creation date: 2024-06-27T15:20:36.622867
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/AS1T01_156T01_9000001034_07507cztM0_level2.evt modeM0/AS1T01_156T01_9000001034_07507cztM0_level2_quad_clean.evt
Size (bytes)740,583,360140,552,640
Size706.3 MB 134.0 MB
Events in quadrant A5,166,350871,682
Events in quadrant B5,692,504885,209
Events in quadrant C5,277,872882,897
Events in quadrant D5,527,933836,831

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229551
B0242911
C0232211
D0241031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11271540.479106%
B11271740.656552%
C11271500.443616%
D11271730.647680%

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 11861 11272 2 2 0.02% 0.02%
B 11861 11272 5 5 0.04% 0.04%
C 11861 11272 3 3 0.03% 0.03%
D 11861 11272 31 31 0.26% 0.28%

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 0 226 12699 41.9 1335 1307 271.9
A 12 194 11777 38.51 1335 1307 271.9
A 15 239 10468 33.7 1335 1307 271.9
B 0 214 205928 794.52 1351 1321 257.5
B 0 219 148894 573.05 1351 1321 257.5
B 0 229 64808 246.53 1351 1321 257.5
C 1 16 60455 194.33 1307 1316 304.3
C 8 229 55765 178.92 1307 1316 304.3
C 9 68 53267 170.71 1307 1316 304.3
D 2 136 182493 560.55 1305 1266 323.3
D 2 152 117937 360.87 1305 1266 323.3
D 5 233 93543 285.42 1305 1266 323.3

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