ASTROSAT CZTI

Data Quality Report

Orbit 32825

Creation date: 2024-06-27T20:42:26.115129
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/AS1C06_002T09_9000004734_32825cztM0_level2.evt modeM0/AS1C06_002T09_9000004734_32825cztM0_level2_quad_clean.evt
Size (bytes)283,435,20054,408,960
Size270.3 MB 51.9 MB
Events in quadrant A1,629,412364,226
Events in quadrant B1,633,970367,937
Events in quadrant C1,590,312364,179
Events in quadrant D3,516,342328,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068472
B068791
C067321
D0127191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3133140.446856%
B3133180.574529%
C3133210.670284%
D31333069.766996%

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 4835 3134 10 10 0.21% 0.32%
B 4835 3134 10 10 0.21% 0.32%
C 4835 3134 15 15 0.31% 0.48%
D 4835 3134 262 262 5.42% 8.36%

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 14 238 75639 974.63 376 368 77.2
A 14 63 66097 851.08 376 368 77.2
A 15 17 20865 265.4 376 368 77.2
B 15 54 42136 579.85 375 366 72.0
B 0 219 36957 507.96 375 366 72.0
B 5 172 23941 327.27 375 366 72.0
C 0 10 82229 969.79 361 363 84.4
C 3 233 30396 355.77 361 363 84.4
C 14 67 21167 246.45 361 363 84.4
D 8 195 770301 9201.02 347 339 83.7
D 12 6 677187 8088.31 347 339 83.7
D 2 250 200200 2388.33 347 339 83.7

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