ASTROSAT CZTI

Data Quality Report

Orbit 22950

Creation date: 2024-06-27T18:47:54.650673
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_009T01_9000003390_22950cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22950cztM0_level2_quad_clean.evt
Size (bytes)857,024,640154,005,120
Size817.3 MB 146.9 MB
Events in quadrant A5,936,729962,015
Events in quadrant B6,156,069972,959
Events in quadrant C5,908,604935,747
Events in quadrant D7,098,894920,985

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259352
B0264882
C0257633
D0298492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126201080.855784%
B126211651.307345%
C126201791.418384%
D126203402.694136%

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 13920 12622 0 0 0.00% 0.00%
B 13921 12623 33 33 0.24% 0.26%
C 13920 12622 14 14 0.10% 0.11%
D 13920 12622 162 162 1.16% 1.28%

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 13 170 148908 487.85 1498 1465 302.2
A 13 254 19571 59.91 1498 1465 302.2
A 3 137 13264 39.04 1498 1465 302.2
B 4 216 169388 592.66 1486 1447 283.4
B 0 190 88448 307.03 1486 1447 283.4
B 0 189 53312 183.03 1486 1447 283.4
C 14 238 228210 678.36 1431 1439 334.3
C 10 22 46380 134.44 1431 1439 334.3
C 8 208 24061 67.67 1431 1439 334.3
D 1 52 610339 1733.16 1445 1400 351.3
D 13 153 346746 982.92 1445 1400 351.3
D 13 172 333215 944.41 1445 1400 351.3

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