ASTROSAT CZTI

Data Quality Report

Orbit 00602

Creation date: 2024-06-27T14:00:25.299127
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_126T01_9000000084_00602cztM0_level2.evt modeM0/AS1P01_126T01_9000000084_00602cztM0_level2_quad_clean.evt
Size (bytes)757,673,28070,848,000
Size722.6 MB 67.6 MB
Events in quadrant A5,884,148452,912
Events in quadrant B5,947,528458,406
Events in quadrant C5,313,978448,164
Events in quadrant D5,467,967435,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210823
B0212292
C0193552
D0198112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499770.140084%
B4997190.380228%
C499730.060036%
D4997470.940564%

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 7152 4998 123 123 1.72% 2.46%
B 7152 4998 123 123 1.72% 2.46%
C 7152 4998 31 31 0.43% 0.62%
D 7152 4998 131 131 1.83% 2.62%

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 13 160 117300 350.03 1463 1447 331.0
A 0 69 30374 87.4 1463 1447 331.0
A 0 238 26407 75.41 1463 1447 331.0
B 5 191 134551 382.31 1484 1492 348.0
B 4 250 48635 135.45 1484 1492 348.0
B 7 221 45067 125.2 1484 1492 348.0
C 9 54 43003 111.95 1332 1381 371.8
C 15 241 16585 40.89 1332 1381 371.8
C 1 1 13929 33.75 1332 1381 371.8
D 13 221 175075 442.61 1244 1292 392.6
D 12 237 171584 433.72 1244 1292 392.6
D 1 4 169942 429.54 1244 1292 392.6

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