ASTROSAT CZTI

Data Quality Report

Orbit 22679

Creation date: 2024-06-27T18:44:21.090114
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/AS1A08_007T01_9000003362_22679cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22679cztM0_level2_quad_clean.evt
Size (bytes)1,204,225,920158,135,040
Size1.1 GB 150.8 MB
Events in quadrant A6,159,5181,021,872
Events in quadrant B6,684,8601,039,299
Events in quadrant C6,248,1551,002,185
Events in quadrant D16,509,142835,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264843
B0280763
C0265773
D0580443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12878590.458146%
B12878870.675571%
C128781521.180308%
D12878300323.318838%

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 15568 12881 16 16 0.10% 0.12%
B 15568 12881 4 4 0.03% 0.03%
C 15568 12881 9 9 0.06% 0.07%
D 15568 12881 2567 2567 16.49% 19.93%

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 15 174 67755 211.99 1575 1539 312.4
A 13 254 22873 68.3 1575 1539 312.4
A 8 205 18403 53.99 1575 1539 312.4
B 0 230 157409 531.18 1568 1529 293.5
B 0 190 115955 389.92 1568 1529 293.5
B 0 245 73519 245.31 1568 1529 293.5
C 14 238 237609 669.17 1517 1526 352.8
C 10 22 65963 182.65 1517 1526 352.8
C 8 128 12573 31.31 1517 1526 352.8
D 7 238 8826799 25780.19 1402 1361 342.3
D 12 227 824666 2404.98 1402 1361 342.3
D 1 52 436876 1272.19 1402 1361 342.3

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