ASTROSAT CZTI

Data Quality Report

Orbit 24222

Creation date: 2024-06-27T19:03:39.541734
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/AS1A07_091T05_9000003584_24222cztM0_level2.evt modeM0/AS1A07_091T05_9000003584_24222cztM0_level2_quad_clean.evt
Size (bytes)620,962,560101,424,960
Size592.2 MB 96.7 MB
Events in quadrant A4,064,321637,050
Events in quadrant B4,263,725640,550
Events in quadrant C4,638,877610,401
Events in quadrant D5,271,651602,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174502
B0179832
C0188592
D0212484

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83582993.577411%
B83593914.677593%
C83594535.419309%
D83583333.984207%

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 8688 8358 0 0 0.00% 0.00%
B 8689 8360 30 30 0.35% 0.36%
C 8689 8359 30 30 0.35% 0.36%
D 8688 8358 30 30 0.35% 0.36%

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 13 254 11949 51.6 1053 1030 211.6
A 3 137 9678 40.87 1053 1030 211.6
A 0 226 8954 37.45 1053 1030 211.6
B 12 17 139200 690.99 1039 1011 200.0
B 0 190 26759 128.75 1039 1011 200.0
B 12 111 25467 122.29 1039 1011 200.0
C 2 16 343314 1451.27 1006 1007 235.9
C 7 247 213273 899.94 1006 1007 235.9
C 14 238 157765 664.6 1006 1007 235.9
D 8 195 998402 3988.26 1026 995 250.1
D 12 233 298791 1190.78 1026 995 250.1
D 7 238 105089 416.23 1026 995 250.1

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