ASTROSAT CZTI

Data Quality Report

Orbit 12008

Creation date: 2024-06-27T16:21:19.194437
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/AS1G08_024T01_9000001776_12008cztM0_level2.evt modeM0/AS1G08_024T01_9000001776_12008cztM0_level2_quad_clean.evt
Size (bytes)1,119,280,320163,586,880
Size1.0 GB 156.0 MB
Events in quadrant A6,840,4791,042,024
Events in quadrant B7,941,0231,015,752
Events in quadrant C5,899,4521,018,515
Events in quadrant D12,335,096976,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286554
B0318913
C0266083
D0453473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130452692.062093%
B130455534.239172%
C130451691.295516%
D13045219416.818704%

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 15296 13046 7 7 0.05% 0.05%
B 15296 13046 232 232 1.52% 1.78%
C 15296 13046 3 3 0.02% 0.02%
D 15296 13046 1962 1962 12.83% 15.04%

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 4 2 247491 778.85 1553 1520 315.8
A 1 162 230617 725.42 1553 1520 315.8
A 1 178 122996 384.65 1553 1520 315.8
B 4 239 1248497 4253.7 1529 1491 293.2
B 10 245 204010 690.82 1529 1491 293.2
B 11 51 190760 645.62 1529 1491 293.2
C 7 247 50759 143.09 1493 1498 344.3
C 14 234 18852 50.41 1493 1498 344.3
C 13 61 10733 26.83 1493 1498 344.3
D 1 52 5903655 17190.49 1428 1384 343.3
D 8 195 288792 837.08 1428 1384 343.3
D 14 34 176703 510.62 1428 1384 343.3

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