ASTROSAT CZTI

Data Quality Report

Orbit 11208

Creation date: 2024-06-27T16:09:47.136210
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/AS1A04_171T01_9000001634_11208cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11208cztM0_level2_quad_clean.evt
Size (bytes)711,164,16086,057,280
Size678.2 MB 82.1 MB
Events in quadrant A5,283,318508,297
Events in quadrant B5,161,530514,808
Events in quadrant C4,081,146518,588
Events in quadrant D6,451,370489,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01704
B01704
C01702
D01702

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021585449
B021144389
C018417338
D025472783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82656978.433152%
B827192111.135292%
C82725536.685203%
D8255110813.422168%

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 8480 8314 26 26 0.31% 0.31%
B 8486 8318 144 144 1.70% 1.73%
C 8506 8310 3 3 0.04% 0.04%
D 8472 8289 416 416 4.91% 5.02%

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 8 15 906736 4166.77 1038 1010 217.4
A 8 5 276423 1267.03 1038 1010 217.4
A 1 162 36947 165.33 1038 1010 217.4
B 4 239 923820 4450.57 1036 1007 207.3
B 15 204 62377 295.98 1036 1007 207.3
B 4 80 49432 233.55 1036 1007 207.3
C 5 128 13926 52.59 1035 1039 245.1
C 8 128 11568 42.97 1035 1039 245.1
C 13 61 7669 27.05 1035 1039 245.1
D 2 14 1214289 4971.3 1001 969 244.1
D 1 52 858343 3512.89 1001 969 244.1
D 13 152 296788 1212.05 1001 969 244.1

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