ASTROSAT CZTI

Data Quality Report

Orbit 50957

Creation date: 2025-02-28T16:01:04.004054
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_001T02_9000006452_50957cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50957cztM0_level2_quad_clean.evt
Size (bytes)670,219,20083,687,040
Size639.2 MB 79.8 MB
Events in quadrant A5,508,520571,690
Events in quadrant B3,176,906655,430
Events in quadrant C4,716,421553,153
Events in quadrant D10,928,593322,543

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01262
B01262
C01273
D01262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02062992
B01378868
C018365207
D037031324

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A618262910.174701%
B61831312.118713%
C61794156.716297%
D6168290147.033074%

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 7380 6191 462 462 6.26% 7.46%
B 7382 6188 30 30 0.41% 0.48%
C 7382 6185 302 302 4.09% 4.88%
D 7382 6175 2571 2571 34.83% 41.64%

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 12 80 1221943 7602.08 651 635 160.7
A 14 254 827152 5144.68 651 635 160.7
A 8 43 227938 1414.86 651 635 160.7
B 4 171 107742 773.81 655 633 138.4
B 4 206 75954 544.16 655 633 138.4
B 10 247 61305 438.33 655 633 138.4
C 4 5 792567 4593.83 621 615 172.4
C 0 193 376896 2182.67 621 615 172.4
C 12 247 348377 2017.24 621 615 172.4
D 2 62 4015098 28304.49 503 485 141.8
D 8 176 2245033 15824.88 503 485 141.8
D 15 125 1961968 13829.17 503 485 141.8

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