ASTROSAT CZTI

Data Quality Report

Orbit 13643

Creation date: 2024-06-27T16:43:56.596093
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/AS1G08_038T02_9000002020_13643cztM0_level2.evt modeM0/AS1G08_038T02_9000002020_13643cztM0_level2_quad_clean.evt
Size (bytes)909,146,880159,416,640
Size867.0 MB 152.0 MB
Events in quadrant A5,837,109943,730
Events in quadrant B6,654,609962,120
Events in quadrant C6,363,8961,059,641
Events in quadrant D7,820,388986,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260193
B0281893
C0265683
D0317493

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126701571.239148%
B126702892.280979%
C126701701.341752%
D126704273.370166%

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 14076 12674 1 1 0.01% 0.01%
B 14076 12674 39 39 0.28% 0.31%
C 14076 12674 23 23 0.16% 0.18%
D 14076 12674 218 218 1.55% 1.72%

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 69 30101 93.23 1509 1476 307.0
A 0 226 13402 38.84 1509 1476 307.0
A 12 194 11541 32.78 1509 1476 307.0
B 0 219 346856 1210.22 1504 1464 285.4
B 4 142 147773 512.65 1504 1464 285.4
B 3 64 147029 510.04 1504 1464 285.4
C 3 233 390723 1144.65 1495 1509 340.0
C 14 234 136842 398.0 1495 1509 340.0
C 13 61 10808 27.35 1495 1509 340.0
D 5 222 1170910 3313.92 1477 1438 352.9
D 8 195 377183 1064.74 1477 1438 352.9
D 13 122 283650 799.7 1477 1438 352.9

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