ASTROSAT CZTI

Data Quality Report

Orbit 38124

Creation date: 2024-06-27T21:48:43.465156
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/AS1C07_001T12_9000005366_38124cztM0_level2.fits modeM0/AS1C07_001T12_9000005366_38124cztM0_level2_quad_clean.evt
Size (bytes)171,198,72044,743,680
Size163.3 MB 42.7 MB
Events in quadrant A1,467,354304,111
Events in quadrant B1,448,716305,796
Events in quadrant C1,324,602297,542
Events in quadrant D1,895,434264,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059702
B059738
C055001
D073581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2560100.390625%
B2555602.348337%
C256080.312500%
D25601254.882812%

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 4203 2561 4 4 0.10% 0.16%
B 4203 2559 38 38 0.90% 1.48%
C 4203 2561 4 4 0.10% 0.16%
D 4203 2561 116 116 2.76% 4.53%

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 183847 2963.08 299 293 61.9
A 12 16 35822 573.54 299 293 61.9
A 12 189 33857 541.82 299 293 61.9
B 4 81 112022 1923.5 295 287 58.1
B 5 172 76954 1319.81 295 287 58.1
B 0 229 60551 1037.43 295 287 58.1
C 15 214 106827 1548.13 291 293 68.8
C 5 250 39326 567.22 291 293 68.8
C 0 10 17175 245.33 291 293 68.8
D 10 40 479712 6765.46 286 277 70.9
D 1 52 68749 966.23 286 277 70.9
D 13 249 48040 674.0 286 277 70.9

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