ASTROSAT CZTI

Data Quality Report

Orbit 55349

Creation date: 2025-12-21T09:27:08.229733
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/AS1A14_009T01_9000006534_55349cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55349cztM0_level2_quad_clean.evt
Size (bytes)591,099,840124,522,560
Size563.7 MB 118.8 MB
Events in quadrant A4,164,551817,589
Events in quadrant B4,295,183877,646
Events in quadrant C5,063,667785,299
Events in quadrant D7,671,448676,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192422
B0195312
C0217812
D0291102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88341071.211229%
B88351211.369553%
C88352212.501415%
D883489310.108671%

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 8869 8836 46 46 0.52% 0.52%
B 8870 8837 14 14 0.16% 0.16%
C 8870 8837 175 175 1.97% 1.98%
D 8869 8836 701 701 7.90% 7.93%

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 0 8 289333 1234.61 949 921 233.6
A 3 78 43215 181.05 949 921 233.6
A 12 3 36180 150.93 949 921 233.6
B 0 199 190631 938.8 945 909 202.1
B 10 247 174091 856.96 945 909 202.1
B 5 185 93413 457.74 945 909 202.1
C 9 38 809829 3211.95 932 918 251.8
C 13 3 245469 971.04 932 918 251.8
C 12 252 149006 588.01 932 918 251.8
D 11 129 3264224 13183.81 880 842 247.5
D 7 70 319477 1287.26 880 842 247.5
D 2 31 190069 764.46 880 842 247.5

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