ASTROSAT CZTI

Data Quality Report

Orbit 41816

Creation date: 2024-06-27T22:33:09.231360
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/AS1A12_093T02_9000005704_41816cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41816cztM0_level2_quad_clean.evt
Size (bytes)953,881,920248,091,840
Size909.7 MB 236.6 MB
Events in quadrant A9,353,1781,658,782
Events in quadrant B7,154,2371,714,027
Events in quadrant C8,776,3361,587,216
Events in quadrant D8,810,8801,469,717

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377364
B0321924
C0358364
D0377744

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156762561.633070%
B15676320.204134%
C156774773.042674%
D156775703.635900%

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 21167 15680 188 188 0.89% 1.20%
B 21167 15676 1 1 0.00% 0.01%
C 21168 15677 479 479 2.26% 3.06%
D 21168 15678 525 525 2.48% 3.35%

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 10 83 1410303 3989.7 1722 1686 353.1
A 14 24 1020637 2886.02 1722 1686 353.1
A 12 189 169509 475.33 1722 1686 353.1
B 4 171 216760 642.45 1718 1668 334.8
B 0 245 66058 192.32 1718 1668 334.8
B 12 111 43558 125.12 1718 1668 334.8
C 0 10 1691828 4374.1 1647 1655 386.4
C 15 214 624931 1613.02 1647 1655 386.4
C 14 254 23308 56.04 1647 1655 386.4
D 13 249 1705244 4185.12 1654 1608 407.1
D 2 249 339060 828.98 1654 1608 407.1
D 12 79 186983 455.39 1654 1608 407.1

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