ASTROSAT CZTI

Data Quality Report

Orbit 37067

Creation date: 2024-06-27T21:35:07.297199
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/AS1A09_026T03_9000005280_37067cztM0_level2.evt modeM0/AS1A09_026T03_9000005280_37067cztM0_level2_quad_clean.evt
Size (bytes)338,437,44040,178,880
Size322.8 MB 38.3 MB
Events in quadrant A1,639,139257,990
Events in quadrant B3,138,468247,850
Events in quadrant C1,869,705249,267
Events in quadrant D3,380,213229,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068751
B0115471
C075361
D0123321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3261100.306654%
B326136411.162220%
C3261601.839926%
D32613069.383625%

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 3261 3261 5 5 0.15% 0.15%
B 3261 3261 263 263 8.07% 8.07%
C 3261 3261 51 51 1.56% 1.56%
D 3261 3261 291 291 8.92% 8.92%

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 149489 1957.75 373 366 76.2
A 9 143 26257 339.91 373 366 76.2
A 12 189 10988 139.45 373 366 76.2
B 5 184 1625763 23057.76 357 348 70.5
B 0 229 27678 387.7 357 348 70.5
B 4 81 18934 263.66 357 348 70.5
C 1 23 205292 2442.45 355 357 83.9
C 15 214 139115 1653.74 355 357 83.9
C 0 10 99938 1186.83 355 357 83.9
D 6 112 667037 7685.54 348 338 86.7
D 12 17 649703 7485.72 348 338 86.7
D 12 235 295045 3397.31 348 338 86.7

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