ASTROSAT CZTI

Data Quality Report

Orbit 35214

Creation date: 2022-04-03T11:41:13.761465
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/AS1C07_004T01_9000005052_35214cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35214cztM0_level2_quad_clean.evt
Size (bytes)577,984,32060,353,280
Size551.2 MB 57.6 MB
Events in quadrant A2,638,107366,401
Events in quadrant B5,365,345368,728
Events in quadrant C3,106,285372,842
Events in quadrant D6,025,410337,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112583
B0195862
C0124472
D0217992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5453110.201724%
B5453108619.915643%
C5453540.990281%
D54533847.041995%

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 7157 5454 2 2 0.03% 0.04%
B 7156 5453 779 779 10.89% 14.29%
C 7157 5454 36 36 0.50% 0.66%
D 7157 5454 427 427 5.97% 7.83%

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 10 83 101394 769.3 648 635 131.0
A 13 6 9023 64.04 648 635 131.0
A 13 254 8484 59.93 648 635 131.0
B 5 236 2512556 22591.56 579 564 111.2
B 4 232 525741 4723.17 579 564 111.2
B 5 172 24944 219.26 579 564 111.2
C 0 10 245343 1681.7 630 634 145.5
C 15 214 231241 1584.79 630 634 145.5
C 3 233 64589 439.52 630 634 145.5
D 8 195 2143399 14282.48 615 598 150.0
D 5 223 719435 4791.29 615 598 150.0
D 13 249 219820 1461.19 615 598 150.0

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