ASTROSAT CZTI

Data Quality Report

Orbit 42448

Creation date: 2024-06-27T22:40:18.522569
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_001T10_9000005806_42448cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42448cztM0_level2_quad_clean.evt
Size (bytes)456,707,52072,815,040
Size435.6 MB 69.4 MB
Events in quadrant A2,996,697544,303
Events in quadrant B6,907,362292,819
Events in quadrant C2,454,092533,560
Events in quadrant D4,161,109486,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120651
B0240761
C0105931
D0158211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49591452.923977%
B4960233547.076613%
C496080.161290%
D49603056.149194%

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 6901 4960 94 94 1.36% 1.90%
B 6902 4961 2040 2040 29.56% 41.12%
C 6902 4961 3 3 0.04% 0.06%
D 6902 4961 313 313 4.53% 6.31%

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 527647 4938.78 515 504 106.7
A 14 223 430841 4031.8 515 504 106.7
A 13 6 11690 104.8 515 504 106.7
B 0 186 5282270 72500.34 374 365 72.9
B 3 112 48266 657.5 374 365 72.9
B 5 172 44179 601.4 374 365 72.9
C 15 214 207316 1745.98 509 511 118.4
C 10 34 179947 1514.91 509 511 118.4
C 14 254 28081 232.76 509 511 118.4
D 1 52 1421463 11502.0 506 492 123.5
D 2 16 182803 1475.71 506 492 123.5
D 13 171 133919 1080.02 506 492 123.5

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