ASTROSAT CZTI

Data Quality Report

Orbit 42893

Creation date: 2024-06-27T22:45:28.970919
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/AS1T05_143T01_9000005830_42893cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42893cztM0_level2_quad_clean.evt
Size (bytes)388,307,52089,464,320
Size370.3 MB 85.3 MB
Events in quadrant A3,664,340604,397
Events in quadrant B2,551,254637,076
Events in quadrant C3,743,322565,293
Events in quadrant D4,007,607535,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142052
B0112102
C0144472
D0155202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52322574.912080%
B5232240.458716%
C52323917.473242%
D52323256.211774%

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 7175 5233 209 209 2.91% 3.99%
B 7175 5233 17 17 0.24% 0.32%
C 7174 5232 339 339 4.73% 6.48%
D 7175 5233 300 300 4.18% 5.73%

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 15 237 630562 5375.77 574 563 117.2
A 10 83 593715 5061.35 574 563 117.2
A 13 248 163828 1393.14 574 563 117.2
B 0 229 127096 1145.69 581 566 110.4
B 3 112 34320 305.63 581 566 110.4
B 0 245 25958 229.92 581 566 110.4
C 12 2 1286510 9993.99 554 557 128.7
C 15 214 218094 1690.62 554 557 128.7
C 14 254 25274 192.09 554 557 128.7
D 1 52 851357 6281.95 560 544 135.4
D 12 6 258641 1905.65 560 544 135.4
D 12 233 254655 1876.22 560 544 135.4

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