ASTROSAT CZTI

Data Quality Report

Orbit 00590

Creation date: 2024-06-27T14:00:14.985913
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/AS1P01_118T02_9000000082_00590cztM0_level2.evt modeM0/AS1P01_118T02_9000000082_00590cztM0_level2_quad_clean.evt
Size (bytes)777,913,92047,839,680
Size741.9 MB 45.6 MB
Events in quadrant A5,930,441274,000
Events in quadrant B5,829,668280,834
Events in quadrant C5,502,230273,408
Events in quadrant D5,957,654262,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212403
B0209632
C0199852
D0213482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5093110.215983%
B509330.058904%
C509380.157078%
D5093851.668957%

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 7219 5094 117 117 1.62% 2.30%
B 7219 5094 62 62 0.86% 1.22%
C 7219 5094 45 45 0.62% 0.88%
D 7219 5094 291 291 4.03% 5.71%

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 69 56202 165.43 1487 1472 330.8
A 13 160 46607 136.43 1487 1472 330.8
A 13 17 36842 106.91 1487 1472 330.8
B 4 250 24851 66.24 1509 1515 352.3
B 5 249 11363 27.95 1509 1515 352.3
B 0 153 10259 24.82 1509 1515 352.3
C 3 159 36412 89.71 1387 1441 389.8
C 15 241 12530 28.44 1387 1441 389.8
C 5 174 5780 11.13 1387 1441 389.8
D 1 4 468016 1142.83 1298 1351 408.3
D 13 252 106871 258.41 1298 1351 408.3
D 13 216 99440 240.21 1298 1351 408.3

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