ASTROSAT CZTI

Data Quality Report

Orbit 19959

Creation date: 2024-06-27T18:09:23.386886
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/AS1T03_036T01_9000002972_19959cztM0_level2.evt modeM0/AS1T03_036T01_9000002972_19959cztM0_level2_quad_clean.evt
Size (bytes)259,493,76040,498,560
Size247.5 MB 38.6 MB
Events in quadrant A2,867,104245,506
Events in quadrant B1,542,735290,269
Events in quadrant C1,642,171266,520
Events in quadrant D1,653,172262,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100381
B062021
C065841
D064771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224080936.116071%
B22401396.205357%
C22401376.116071%
D22401757.812500%

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 3500 2240 616 616 17.60% 27.50%
B 3500 2240 36 36 1.03% 1.61%
C 3500 2240 2 2 0.06% 0.09%
D 3500 2240 110 110 3.14% 4.91%

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 1797580 32324.1 272 267 55.6
A 14 254 8872 154.76 272 267 55.6
A 5 16 8804 153.54 272 267 55.6
B 7 220 206158 3206.76 331 324 64.2
B 4 171 11609 175.81 331 324 64.2
B 0 198 9428 141.83 331 324 64.2
C 3 233 313516 4196.25 318 321 74.6
C 14 238 50245 668.89 318 321 74.6
C 9 221 28091 372.07 318 321 74.6
D 9 1 229588 2845.18 328 319 80.6
D 12 218 93414 1155.29 328 319 80.6
D 12 233 42120 518.74 328 319 80.6

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