ASTROSAT CZTI

Data Quality Report

Orbit 13181

Creation date: 2024-06-27T16:37:23.832543
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/AS1T02_012T04_9000001952_13181cztM0_level2.evt modeM0/AS1T02_012T04_9000001952_13181cztM0_level2_quad_clean.evt
Size (bytes)439,871,04048,326,400
Size419.5 MB 46.1 MB
Events in quadrant A2,070,992306,831
Events in quadrant B5,361,040262,047
Events in quadrant C1,991,113307,751
Events in quadrant D3,596,122273,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091021
B0189261
C089821
D0136381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4435190.428410%
B4435155034.949267%
C443590.202931%
D443544510.033822%

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 5506 4437 0 0 0.00% 0.00%
B 5506 4437 1000 1000 18.16% 22.54%
C 5506 4437 0 0 0.00% 0.00%
D 5506 4437 315 315 5.72% 7.10%

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 12 189 56654 531.26 517 505 105.7
A 4 2 8753 78.04 517 505 105.7
A 1 162 6432 56.08 517 505 105.7
B 4 239 3654405 45401.43 415 404 80.5
B 0 189 21362 260.41 415 404 80.5
B 4 216 13866 167.27 415 404 80.5
C 15 208 7555 59.27 508 510 118.9
C 13 61 3669 26.58 508 510 118.9
C 8 222 1454 7.94 508 510 118.9
D 13 122 946991 8043.98 484 469 117.7
D 1 52 575446 4886.42 484 469 117.7
D 14 34 155038 1313.6 484 469 117.7

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