ASTROSAT CZTI

Data Quality Report

Orbit 21412

Creation date: 2024-06-27T18:27:32.271101
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/AS1T03_140T01_9000003160_21412cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21412cztM0_level2_quad_clean.evt
Size (bytes)517,867,200102,012,480
Size493.9 MB 97.3 MB
Events in quadrant A3,499,115658,765
Events in quadrant B3,676,376662,214
Events in quadrant C3,638,426641,540
Events in quadrant D4,377,562622,334

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150091
B0156161
C0155121
D0178621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7246310.427822%
B7246911.255865%
C7246861.186862%
D72471512.083621%

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 7581 7247 0 0 0.00% 0.00%
B 7581 7247 26 26 0.34% 0.36%
C 7581 7247 1 1 0.01% 0.01%
D 7582 7248 121 121 1.60% 1.67%

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 5 168 87519 484.28 883 866 178.9
A 13 254 10721 55.08 883 866 178.9
A 0 226 7657 37.95 883 866 178.9
B 3 64 71693 416.98 876 853 169.9
B 0 189 70005 407.04 876 853 169.9
B 0 228 46890 270.98 876 853 169.9
C 3 233 222510 1127.64 838 844 196.6
C 14 238 132517 669.84 838 844 196.6
C 10 91 13462 64.19 838 844 196.6
D 12 235 381674 1851.48 847 821 205.7
D 7 38 209131 1012.68 847 821 205.7
D 1 20 116383 561.79 847 821 205.7

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