ASTROSAT CZTI

Data Quality Report

Orbit 27235

Creation date: 2024-06-27T19:38:02.120265
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/AS1T03_243T01_9000003918_27235cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27235cztM0_level2_quad_clean.evt
Size (bytes)1,027,422,720142,827,840
Size979.8 MB 136.2 MB
Events in quadrant A6,157,203884,576
Events in quadrant B8,681,947886,128
Events in quadrant C6,273,810857,565
Events in quadrant D9,129,009803,644

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265750
B0339860
C0267990
D0358030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129171381.068360%
B129176334.900519%
C129172091.618023%
D129179957.703027%

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 14557 12920 2 2 0.01% 0.02%
B 14557 12920 251 251 1.72% 1.94%
C 14557 12920 16 16 0.11% 0.12%
D 14557 12919 783 783 5.38% 6.06%

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 8 192 21918 64.35 1579 1543 316.6
A 15 174 20870 61.04 1579 1543 316.6
A 13 254 20269 59.14 1579 1543 316.6
B 3 64 2482904 8265.55 1556 1516 300.2
B 0 190 49375 159.42 1556 1516 300.2
B 12 111 37466 119.75 1556 1516 300.2
C 14 238 241077 673.12 1510 1518 355.9
C 15 208 125867 349.4 1510 1518 355.9
C 1 16 29162 77.68 1510 1518 355.9
D 1 52 3093700 8728.35 1445 1410 354.3
D 2 250 169860 475.47 1445 1410 354.3
D 5 222 105137 292.78 1445 1410 354.3

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