ASTROSAT CZTI

Data Quality Report

Orbit 49777

Creation date: 2024-12-11T05:15:56.112646
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_49777cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49777cztM0_level2_quad_clean.evt
Size (bytes)1,083,024,00054,622,080
Size1.0 GB 52.1 MB
Events in quadrant A8,401,069488,306
Events in quadrant B3,398,140637,148
Events in quadrant C11,985,90717,148
Events in quadrant D15,807,87362,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294661
B0146771
C0400242
D0513891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424130420.298879%
B64241482.303861%
C6424626697.540473%
D6424585591.142590%

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 7304 6423 1079 1079 14.77% 16.80%
B 7304 6425 60 60 0.82% 0.93%
C 7303 6420 3223 3223 44.13% 50.20%
D 7303 6423 5244 5244 71.81% 81.64%

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 8 8 1408167 8959.79 618 601 157.1
A 7 64 1264803 8047.22 618 601 157.1
A 15 63 594263 3778.93 618 601 157.1
B 5 185 168856 1165.88 676 653 144.3
B 4 206 125083 862.48 676 653 144.3
B 7 252 63742 437.3 676 653 144.3
C 15 147 4889707 78075.9 127 122 62.6
C 15 148 1682249 26859.86 127 122 62.6
C 15 233 1039266 16592.84 127 122 62.6
D 8 129 4038452 39901.63 317 305 101.2
D 15 142 2787026 27536.07 317 305 101.2
D 15 168 2604034 25727.9 317 305 101.2

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