ASTROSAT CZTI

Data Quality Report

Orbit 27539

Creation date: 2024-06-27T19:41:12.644043
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/AS1A09_038T23_9000003944_27539cztM0_level2.evt modeM0/AS1A09_038T23_9000003944_27539cztM0_level2_quad_clean.evt
Size (bytes)330,148,80080,452,800
Size314.9 MB 76.7 MB
Events in quadrant A2,249,122533,571
Events in quadrant B2,577,994536,765
Events in quadrant C2,290,711515,830
Events in quadrant D2,543,758503,573

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101540
B0109440
C0103050
D0110800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937671.357099%
B49371122.268584%
C4937731.478631%
D49371062.147053%

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 5467 4937 0 0 0.00% 0.00%
B 5467 4937 42 42 0.77% 0.85%
C 5467 4937 2 2 0.04% 0.04%
D 5467 4937 77 77 1.41% 1.56%

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 0 13 14172 118.2 572 561 115.2
A 4 2 12023 99.54 572 561 115.2
A 15 174 9174 74.8 572 561 115.2
B 10 245 252249 2305.39 568 551 109.2
B 0 230 33222 299.24 568 551 109.2
B 4 200 24727 221.44 568 551 109.2
C 14 238 88987 682.35 548 549 129.6
C 7 221 51614 394.0 548 549 129.6
C 2 16 16214 120.86 548 549 129.6
D 1 52 291955 2213.28 546 529 131.7
D 2 250 77333 583.3 546 529 131.7
D 7 80 71459 538.69 546 529 131.7

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