ASTROSAT CZTI

Data Quality Report

Orbit 14664

Creation date: 2024-06-27T16:58:11.429867
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_020T01_9000002168_14664cztM0_level2.evt modeM0/AS1G08_020T01_9000002168_14664cztM0_level2_quad_clean.evt
Size (bytes)476,884,800104,160,960
Size454.8 MB 99.3 MB
Events in quadrant A3,338,745686,086
Events in quadrant B3,227,889688,961
Events in quadrant C3,812,018676,431
Events in quadrant D3,631,019658,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139273
B0136492
C0154112
D0150202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6379310.485970%
B6379620.971939%
C6379360.564352%
D63792243.511522%

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 7535 6381 0 0 0.00% 0.00%
B 7535 6381 1 1 0.01% 0.02%
C 7535 6381 0 0 0.00% 0.00%
D 7534 6380 196 196 2.60% 3.07%

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 12 189 84067 514.81 803 787 161.8
A 1 162 65138 397.79 803 787 161.8
A 8 15 52002 316.59 803 787 161.8
B 12 111 17600 111.07 804 787 151.4
B 11 111 14867 93.02 804 787 151.4
B 0 190 13215 82.1 804 787 151.4
C 3 233 723560 3955.13 791 796 182.7
C 13 61 5556 26.05 791 796 182.7
C 3 234 3376 14.12 791 796 182.7
D 10 199 551253 2718.03 774 759 202.5
D 5 222 49257 239.46 774 759 202.5
D 10 70 29204 140.45 774 759 202.5

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