ASTROSAT CZTI

Data Quality Report

Orbit 48711

Creation date: 2024-09-30T10:17:58.353550
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_037T01_9000006436_48711cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48711cztM0_level2_quad_clean.evt
Size (bytes)504,339,840120,268,800
Size481.0 MB 114.7 MB
Events in quadrant A7,977,219757,222
Events in quadrant B3,409,334829,985
Events in quadrant C3,359,109801,512
Events in quadrant D3,330,493721,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288062
B0159202
C0158502
D0159812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76365056.613410%
B7637881.152285%
C7637270.353542%
D7637390.510672%

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 9076 7638 201 201 2.21% 2.63%
B 9077 7639 6 6 0.07% 0.08%
C 9077 7639 6 6 0.07% 0.08%
D 9077 7639 13 13 0.14% 0.17%

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 10 83 4414092 25568.28 823 803 172.6
A 13 248 365572 2113.28 823 803 172.6
A 13 254 14341 78.43 823 803 172.6
B 12 16 46194 268.79 845 818 168.8
B 12 111 21845 124.56 845 818 168.8
B 11 111 20292 115.36 845 818 168.8
C 12 2 44324 220.0 837 838 197.7
C 3 233 33589 165.69 837 838 197.7
C 14 254 8171 37.1 837 838 197.7
D 5 171 67811 323.35 825 801 207.2
D 2 234 38481 181.82 825 801 207.2
D 2 233 32786 154.34 825 801 207.2

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