ASTROSAT CZTI

Data Quality Report

Orbit 41739

Creation date: 2024-06-27T22:32:17.883354
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/AS1A12_077T11_9000005696_41739cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41739cztM0_level2_quad_clean.evt
Size (bytes)440,458,56088,807,680
Size420.1 MB 84.7 MB
Events in quadrant A2,887,385608,744
Events in quadrant B2,483,038620,569
Events in quadrant C3,416,685560,367
Events in quadrant D7,090,241514,403

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119512
B0113142
C0134622
D0249844

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5499140.254592%
B5499220.400073%
C54992755.000909%
D54985389.785377%

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 7080 5499 4 4 0.06% 0.07%
B 7080 5498 8 8 0.11% 0.15%
C 7080 5498 268 268 3.79% 4.87%
D 7079 5497 756 756 10.68% 13.75%

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 549957 4439.98 602 589 123.7
A 13 254 7953 59.52 602 589 123.7
A 3 137 6654 49.02 602 589 123.7
B 5 255 75157 638.98 594 578 116.7
B 0 245 42421 358.5 594 578 116.7
B 12 111 14749 121.41 594 578 116.7
C 0 10 913933 6875.52 562 564 132.8
C 15 214 217749 1634.89 562 564 132.8
C 14 254 79128 591.4 562 564 132.8
D 12 79 4348824 30956.8 568 553 140.5
D 2 249 399513 2840.33 568 553 140.5
D 1 47 39540 277.56 568 553 140.5

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