ASTROSAT CZTI

Data Quality Report

Orbit 17433

Creation date: 2024-06-27T17:36:29.056072
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/AS1A05_198T01_9000002578_17433cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17433cztM0_level2_quad_clean.evt
Size (bytes)700,977,600103,377,600
Size668.5 MB 98.6 MB
Events in quadrant A7,547,853592,858
Events in quadrant B4,287,460671,467
Events in quadrant C4,189,017641,546
Events in quadrant D4,627,097631,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282512
B0181922
C0176482
D0196103

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8529135615.898699%
B85301521.781946%
C85301461.711606%
D85291401.641459%

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 9094 8531 1046 1046 11.50% 12.26%
B 9095 8533 4 4 0.04% 0.05%
C 9095 8533 0 0 0.00% 0.00%
D 9094 8532 53 53 0.58% 0.62%

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 10 253 3786961 19146.92 968 947 197.7
A 14 238 25673 125.05 968 947 197.7
A 14 237 14698 69.54 968 947 197.7
B 0 219 62331 304.27 1039 1014 201.5
B 0 230 45083 218.68 1039 1014 201.5
B 15 19 37659 181.84 1039 1014 201.5
C 14 238 149321 634.59 989 993 233.7
C 5 218 137615 584.51 989 993 233.7
C 3 233 21983 89.8 989 993 233.7
D 13 232 284395 1147.19 1003 970 247.1
D 13 189 113857 456.92 1003 970 247.1
D 7 238 95736 383.57 1003 970 247.1

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