ASTROSAT CZTI

Data Quality Report

Orbit 07509

Creation date: 2024-06-27T15:20:38.587261
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/AS1A02_134T01_9000001036_07509cztM0_level2.evt modeM0/AS1A02_134T01_9000001036_07509cztM0_level2_quad_clean.evt
Size (bytes)937,339,200201,257,280
Size893.9 MB 191.9 MB
Events in quadrant A6,544,0111,301,636
Events in quadrant B7,042,6331,308,695
Events in quadrant C6,897,8931,273,260
Events in quadrant D6,937,9551,228,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291834
B0299233
C0302673
D0306613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142461621.137161%
B142461831.284571%
C142461571.102064%
D142461971.382844%

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 17236 14246 0 0 0.00% 0.00%
B 17236 14246 9 9 0.05% 0.06%
C 17236 14246 17 17 0.10% 0.12%
D 17236 14246 48 48 0.28% 0.34%

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 3 1 17995 48.32 1691 1658 338.1
A 0 226 16083 42.66 1691 1658 338.1
A 12 194 14993 39.44 1691 1658 338.1
B 0 214 258560 810.76 1692 1649 316.9
B 0 229 77766 240.21 1692 1649 316.9
B 0 219 65373 201.1 1692 1649 316.9
C 8 229 282199 750.08 1634 1640 374.0
C 9 68 121681 320.93 1634 1640 374.0
C 1 16 80091 209.74 1634 1640 374.0
D 2 152 307311 771.06 1635 1582 396.5
D 1 52 144704 360.96 1635 1582 396.5
D 2 14 83562 206.76 1635 1582 396.5

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