ASTROSAT CZTI

Data Quality Report

Orbit 42169

Creation date: 2024-06-27T22:37:42.098643
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/AS1A11_032T04_9000005766_42169cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42169cztM0_level2_quad_clean.evt
Size (bytes)284,342,40087,773,760
Size271.2 MB 83.7 MB
Events in quadrant A2,924,935587,497
Events in quadrant B2,334,932611,628
Events in quadrant C2,374,436579,293
Events in quadrant D2,504,029531,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116432
B0102182
C0100452
D0109532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4962561.128577%
B4962100.201532%
C496220.040306%
D4962420.846433%

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 6995 4963 46 46 0.66% 0.93%
B 6995 4963 3 3 0.04% 0.06%
C 6995 4963 0 0 0.00% 0.00%
D 6994 4962 33 33 0.47% 0.67%

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 530135 4527.66 557 546 117.0
A 15 222 179145 1526.91 557 546 117.0
A 12 189 30230 253.78 557 546 117.0
B 0 229 99185 910.49 562 547 108.3
B 15 35 25404 229.45 562 547 108.3
B 12 111 13451 119.11 562 547 108.3
C 15 214 207822 1606.14 550 554 129.0
C 15 159 17576 131.91 550 554 129.0
C 0 207 4132 27.73 550 554 129.0
D 1 52 175635 1325.99 543 527 132.1
D 12 6 120592 909.18 543 527 132.1
D 5 70 31658 235.74 543 527 132.1

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