ASTROSAT CZTI

Data Quality Report

Orbit 01221

Creation date: 2024-06-27T14:09:20.794891
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/AS1G04_007T02_9000000220_01221cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01221cztM0_level2_quad_clean.evt
Size (bytes)1,202,757,120101,926,080
Size1.1 GB 97.2 MB
Events in quadrant A8,402,986676,876
Events in quadrant B9,588,334660,899
Events in quadrant C8,499,038643,725
Events in quadrant D9,483,885629,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298272
B0333711
C0300831
D0330591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6836130.190170%
B68361472.150380%
C6836160.234055%
D68361702.486834%

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 6891 6837 343 343 4.98% 5.02%
B 6891 6836 758 758 11.00% 11.09%
C 6891 6837 330 330 4.79% 4.83%
D 6891 6837 995 995 14.44% 14.55%

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 15 127 52580 96.96 2161 2168 519.9
A 0 51 25032 43.98 2161 2168 519.9
A 11 79 10969 16.93 2161 2168 519.9
B 2 32 814578 1545.95 2220 2222 525.5
B 6 53 153214 287.34 2220 2222 525.5
B 12 52 50175 91.26 2220 2222 525.5
C 15 241 358824 618.98 2059 2132 576.3
C 3 79 52809 87.94 2059 2132 576.3
C 3 111 37617 61.58 2059 2132 576.3
D 1 239 1412914 2281.72 1989 2059 618.3
D 13 70 396739 638.3 1989 2059 618.3
D 13 169 93606 148.06 1989 2059 618.3

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