ASTROSAT CZTI

Data Quality Report

Orbit 49779

Creation date: 2024-12-11T10:29:47.846403
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_9000006440_49779cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49779cztM0_level2_quad_clean.evt
Size (bytes)1,105,750,08052,116,480
Size1.0 GB 49.7 MB
Events in quadrant A8,802,814455,524
Events in quadrant B4,312,616638,720
Events in quadrant C11,262,39413,829
Events in quadrant D16,060,72325,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306591
B0170781
C0379151
D0521053

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368180028.266332%
B63692794.380593%
C6369626198.304286%
D6368617496.953518%

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 7423 6368 1485 1485 20.01% 23.32%
B 7424 6370 160 160 2.16% 2.51%
C 7423 6367 2136 2136 28.78% 33.55%
D 7422 6367 5450 5450 73.43% 85.60%

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 7 64 1907480 12580.61 595 578 151.6
A 15 63 759162 5004.69 595 578 151.6
A 8 8 589944 3888.29 595 578 151.6
B 4 171 596394 4137.85 674 653 144.0
B 10 128 220056 1523.91 674 653 144.0
B 4 206 153454 1061.31 674 653 144.0
C 15 147 5048887 159100.94 69 66 31.7
C 15 148 3193045 100618.73 69 66 31.7
C 15 233 629433 19832.92 69 66 31.7
D 15 142 4135849 46915.63 274 261 88.1
D 8 129 3944256 44742.13 274 261 88.1
D 15 168 1735417 19684.25 274 261 88.1

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