ASTROSAT CZTI

Data Quality Report

Orbit 31499

Creation date: 2024-06-27T20:29:23.925083
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/AS1T04_030T01_9000004588_31499cztM0_level2.evt modeM0/AS1T04_030T01_9000004588_31499cztM0_level2_quad_clean.evt
Size (bytes)455,757,12068,310,720
Size434.6 MB 65.1 MB
Events in quadrant A2,804,032437,195
Events in quadrant B4,208,249435,817
Events in quadrant C3,224,392418,355
Events in quadrant D3,212,175411,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012195871
B0171851199
C013555826
D013512810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01179
B01135
C01125
D01148

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213
B0191
C0180
D0213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5226440.841944%
B51991162.231198%
C52081923.686636%
D5217981.878474%

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 7623 5288 1 1 0.01% 0.02%
B 7623 5269 6 6 0.08% 0.11%
C 7623 5279 59 59 0.77% 1.12%
D 7623 5290 66 66 0.87% 1.25%

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 0 13 60880 428.44 708 696 140.5
A 14 238 13943 94.3 708 696 140.5
A 13 254 9267 61.02 708 696 140.5
B 6 159 1391001 10617.55 696 680 130.9
B 12 1 26515 197.3 696 680 130.9
B 4 80 16170 118.29 696 680 130.9
C 3 233 253673 1629.39 675 680 155.3
C 0 10 207424 1331.52 675 680 155.3
C 14 238 109382 700.09 675 680 155.3
D 8 195 271756 1666.33 684 666 162.7
D 12 233 160882 984.81 684 666 162.7
D 2 250 118259 722.82 684 666 162.7

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