ASTROSAT CZTI

Data Quality Report

Orbit 39717

Creation date: 2024-06-27T22:08:09.584804
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/AS1A12_022T01_9000005494_39717cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39717cztM0_level2_quad_clean.evt
Size (bytes)458,372,16085,875,840
Size437.1 MB 81.9 MB
Events in quadrant A2,969,928602,797
Events in quadrant B2,881,051604,219
Events in quadrant C7,365,557489,969
Events in quadrant D3,334,742528,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120102
B0121181
C0257111
D0135501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5356320.597461%
B53561412.632562%
C5356110020.537715%
D53561532.856609%

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 7030 5357 16 16 0.23% 0.30%
B 7030 5357 103 103 1.47% 1.92%
C 7030 5357 1135 1135 16.15% 21.19%
D 7030 5357 135 135 1.92% 2.52%

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 395028 3218.37 598 585 122.6
A 15 174 160327 1303.38 598 585 122.6
A 9 143 93350 756.9 598 585 122.6
B 5 255 249481 2182.49 585 568 114.1
B 5 172 199085 1740.61 585 568 114.1
B 0 190 85580 745.39 585 568 114.1
C 9 187 3806110 29995.7 544 547 126.9
C 15 208 787046 6199.24 544 547 126.9
C 14 254 396842 3123.62 544 547 126.9
D 12 227 664178 4686.61 575 558 141.6
D 2 250 284426 2004.73 575 558 141.6
D 13 249 59356 415.24 575 558 141.6

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