ASTROSAT CZTI

Data Quality Report

Orbit 10227

Creation date: 2024-06-27T15:56:36.155708
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/AS1A03_099T01_9000001472_10227cztM0_level2.evt modeM0/AS1A03_099T01_9000001472_10227cztM0_level2_quad_clean.evt
Size (bytes)1,993,593,600355,412,160
Size1.9 GB 338.9 MB
Events in quadrant A14,054,9452,184,386
Events in quadrant B14,292,9812,187,980
Events in quadrant C12,769,1612,216,867
Events in quadrant D17,311,5362,195,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09398033035
B09683435443
C09000231788
D010480533488

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0904301
B0904299
C0904295
D0876276

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04513
B04816
C04816
D04614

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283242420.854399%
B282692490.880824%
C28638500.174593%
D299923481.160309%

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 33956 30317 79 79 0.23% 0.26%
B 33956 30271 67 67 0.20% 0.22%
C 33956 30479 0 0 0.00% 0.00%
D 33956 30642 284 284 0.84% 0.93%

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 8 15 618832 921.59 3307 3234 668.0
A 15 223 426702 633.96 3307 3234 668.0
A 15 239 193646 285.06 3307 3234 668.0
B 4 239 506967 798.92 3320 3242 630.5
B 0 214 250467 392.1 3320 3242 630.5
B 11 51 215279 336.29 3320 3242 630.5
C 0 207 59762 75.32 3246 3260 750.1
C 14 67 29151 34.51 3246 3260 750.1
C 13 61 24717 28.6 3246 3260 750.1
D 1 52 2479816 3060.4 3368 3270 809.2
D 8 195 1364743 1682.45 3368 3270 809.2
D 7 71 238572 290.78 3368 3270 809.2

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