ASTROSAT CZTI

Data Quality Report

Orbit 21365

Creation date: 2024-06-27T18:26:54.751428
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/AS1A06_009T02_9000003152_21365cztM0_level2.evt modeM0/AS1A06_009T02_9000003152_21365cztM0_level2_quad_clean.evt
Size (bytes)488,053,440103,838,400
Size465.4 MB 99.0 MB
Events in quadrant A3,278,657700,728
Events in quadrant B3,331,734697,844
Events in quadrant C3,713,711663,071
Events in quadrant D4,042,284656,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134651
B0137431
C0151901
D0161521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6111681.112748%
B6112831.357984%
C6112951.554319%
D61121352.208770%

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 7421 6111 2 2 0.03% 0.03%
B 7422 6112 17 17 0.23% 0.28%
C 7422 6113 2 2 0.03% 0.03%
D 7422 6113 62 62 0.84% 1.01%

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 5 168 123448 758.21 807 792 161.8
A 12 96 36547 221.02 807 792 161.8
A 13 254 9792 55.63 807 792 161.8
B 0 190 61104 405.24 792 776 148.9
B 0 230 55948 370.61 792 776 148.9
B 3 64 39970 263.28 792 776 148.9
C 3 233 672682 3907.03 749 753 172.0
C 14 238 121243 700.61 749 753 172.0
C 13 61 5264 26.23 749 753 172.0
D 12 235 783028 4208.21 770 748 185.9
D 7 38 116421 622.25 770 748 185.9
D 1 52 94605 504.9 770 748 185.9

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