ASTROSAT CZTI

Data Quality Report

Orbit 51229

Creation date: 2025-03-19T00:51:44.551907
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/AS1C07_001T01_9000006454_51229cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51229cztM0_level2_quad_clean.evt
Size (bytes)539,758,08094,806,720
Size514.8 MB 90.4 MB
Events in quadrant A4,760,344627,375
Events in quadrant B4,153,916685,992
Events in quadrant C6,663,847509,327
Events in quadrant D3,875,208574,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187332
B0169982
C0245853
D0163743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67842483.655660%
B67851482.181282%
C6784137720.297759%
D67831842.712664%

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 7705 6786 145 145 1.88% 2.14%
B 7705 6786 74 74 0.96% 1.09%
C 7704 6785 1060 1060 13.76% 15.62%
D 7704 6785 145 145 1.88% 2.14%

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 3 700222 3959.11 714 698 176.7
A 3 114 223314 1259.94 714 698 176.7
A 9 191 166176 936.56 714 698 176.7
B 8 128 365612 2358.59 717 690 154.7
B 10 254 292370 1885.21 717 690 154.7
B 5 185 114806 737.56 717 690 154.7
C 4 12 3186040 18558.68 620 618 171.6
C 13 3 238244 1384.44 620 618 171.6
C 9 95 234208 1360.92 620 618 171.6
D 2 249 198240 1003.78 697 673 196.8
D 8 176 191403 969.04 697 673 196.8
D 2 207 150358 760.51 697 673 196.8

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