ASTROSAT CZTI

Data Quality Report

Orbit 20160624_G05_173T01_9000000514_level2

Creation date: 2025-10-31T03:24:14.289697
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/AS1G05_173T01_9000000514cztM0_level2.fits modeM0/AS1G05_173T01_9000000514cztM0_level2_quad_clean.evt
Size (bytes)1,028,525,7601,072,586,880
Size980.9 MB 1022.9 MB
Events in quadrant A6,100,5906,374,062
Events in quadrant B5,959,8026,450,714
Events in quadrant C6,046,4946,173,178
Events in quadrant D5,216,8565,664,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550
B01550
C01550
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02450820
B02385690
C02336260
D02572580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023220
B023180
C023220
D023200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11415327082.372255%
B11416918871.652813%
C11415913781.207088%
D11415022952.010512%

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 128966 114226 0 0 0.00% 0.00%
B 128966 114229 0 0 0.00% 0.00%
C 128966 114232 0 0 0.00% 0.00%
D 128966 114229 0 0 0.00% 0.00%

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 14 188 6107 11.32 1584 1474 409.3
A 0 29 5859 10.71 1584 1474 409.3
A 14 204 5308 9.37 1584 1474 409.3
B 2 9 5212 11.7 1571 1490 318.1
B 12 226 4441 9.28 1571 1490 318.1
B 14 254 4176 8.44 1571 1490 318.1
C 12 241 4158 6.3 1597 1470 426.8
C 7 111 4106 6.17 1597 1470 426.8
C 2 191 4096 6.15 1597 1470 426.8
D 11 82 4460 7.82 1485 1346 398.2
D 3 14 3946 6.53 1485 1346 398.2
D 6 231 3842 6.27 1485 1346 398.2

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