ASTROSAT CZTI

Data Quality Report

Orbit 51597

Creation date: 2025-04-12T19:09:39.785056
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/AS1A13_037T05_9000006460_51597cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51597cztM0_level2_quad_clean.evt
Size (bytes)561,686,40095,880,960
Size535.7 MB 91.4 MB
Events in quadrant A4,118,975642,961
Events in quadrant B4,447,976697,206
Events in quadrant C5,320,041585,770
Events in quadrant D6,395,996519,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166042
B0174961
C0202681
D0234751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65572323.538203%
B65582824.300091%
C655866910.201281%
D655897114.806343%

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 7652 6558 76 76 0.99% 1.16%
B 7653 6558 145 145 1.89% 2.21%
C 7653 6559 437 437 5.71% 6.66%
D 7653 6558 774 774 10.11% 11.80%

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 12 250 299887 1675.65 735 719 178.5
A 12 3 272234 1520.76 735 719 178.5
A 4 175 134032 746.69 735 719 178.5
B 10 44 507147 3278.97 724 700 154.5
B 4 174 244062 1575.64 724 700 154.5
B 5 185 162634 1048.44 724 700 154.5
C 15 198 1404588 7455.23 688 682 188.3
C 3 233 910740 4832.72 688 682 188.3
C 13 3 155859 824.04 688 682 188.3
D 5 113 1590673 8387.45 682 660 189.6
D 12 6 926569 4884.24 682 660 189.6
D 2 155 260538 1370.88 682 660 189.6

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