ASTROSAT CZTI

Data Quality Report

Orbit 14740

Creation date: 2024-06-27T16:58:59.147983
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_203T01_9000002180_14740cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14740cztM0_level2_quad_clean.evt
Size (bytes)598,896,00063,290,880
Size571.2 MB 60.4 MB
Events in quadrant A9,667,918339,722
Events in quadrant B2,754,032408,501
Events in quadrant C2,879,803401,466
Events in quadrant D2,476,370394,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323923
B0117272
C0119172
D0111672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5303282753.309447%
B5303751.414294%
C5303290.546860%
D5303430.810862%

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 5634 5304 2472 2472 43.88% 46.61%
B 5634 5305 5 5 0.09% 0.09%
C 5634 5304 1 1 0.02% 0.02%
D 5634 5306 13 13 0.23% 0.25%

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 7521315 67237.41 541 529 111.9
A 12 189 46668 412.49 541 529 111.9
A 9 143 9928 84.03 541 529 111.9
B 0 205 74343 595.42 642 625 123.8
B 0 189 40389 321.18 642 625 123.8
B 0 228 30832 243.98 642 625 123.8
C 3 233 430200 2939.45 621 624 146.1
C 14 220 11394 73.7 621 624 146.1
C 4 254 8676 55.1 621 624 146.1
D 2 33 30879 198.29 618 602 152.7
D 2 234 27123 173.69 618 602 152.7
D 2 120 21347 135.86 618 602 152.7

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