ASTROSAT CZTI

Data Quality Report

Orbit 24347

Creation date: 2024-06-27T19:05:01.738156
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/AS1A07_145T01_9000003594_24347cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24347cztM0_level2_quad_clean.evt
Size (bytes)600,094,080104,866,560
Size572.3 MB 100.0 MB
Events in quadrant A3,158,457693,716
Events in quadrant B3,222,895726,741
Events in quadrant C6,433,977673,227
Events in quadrant D4,937,644647,361

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132572
B0134272
C0235256
D0190042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6232310.497433%
B6232590.946727%
C62313725.970149%
D62311883.017172%

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 7552 6233 2 2 0.03% 0.03%
B 7552 6233 1 1 0.01% 0.02%
C 7551 6232 11 11 0.15% 0.18%
D 7551 6232 134 134 1.77% 2.15%

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 2 79 44962 276.13 807 792 160.0
A 13 254 9106 51.97 807 792 160.0
A 0 226 6980 38.68 807 792 160.0
B 12 111 18131 113.15 817 799 153.2
B 11 111 16103 99.91 817 799 153.2
B 14 111 14525 89.61 817 799 153.2
C 7 247 3247848 17951.39 779 784 180.9
C 14 238 125182 687.73 779 784 180.9
C 2 16 13956 72.82 779 784 180.9
D 8 195 953018 5089.24 775 753 187.1
D 1 52 509980 2721.49 775 753 187.1
D 7 238 357139 1904.65 775 753 187.1

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