ASTROSAT CZTI

Data Quality Report

Orbit 13475

Creation date: 2024-06-27T16:41:21.352165
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_103T01_9000001988_13475cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13475cztM0_level2_quad_clean.evt
Size (bytes)518,797,44072,682,560
Size494.8 MB 69.3 MB
Events in quadrant A3,417,964443,358
Events in quadrant B4,974,105436,944
Events in quadrant C3,481,832438,823
Events in quadrant D3,390,609421,909

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142873
B0189132
C0144972
D0144122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65961191.804124%
B659666810.127350%
C65961041.576713%
D65961001.516070%

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 7867 6597 0 0 0.00% 0.00%
B 7867 6597 455 455 5.78% 6.90%
C 7867 6597 3 3 0.04% 0.05%
D 7867 6597 1 1 0.01% 0.02%

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 0 226 7931 39.84 887 870 177.2
A 12 194 6536 31.97 887 870 177.2
A 1 162 5382 25.46 887 870 177.2
B 3 64 1595384 10068.17 854 835 158.4
B 0 214 34606 213.23 854 835 158.4
B 12 111 18103 109.03 854 835 158.4
C 3 233 91223 461.9 857 862 195.6
C 0 207 38296 191.35 857 862 195.6
C 10 9 9098 42.1 857 862 195.6
D 8 195 89569 442.17 851 830 200.7
D 14 35 48678 238.42 851 830 200.7
D 2 234 21575 103.37 851 830 200.7

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