ASTROSAT CZTI

Data Quality Report

Orbit 18844

Creation date: 2024-06-27T17:55:34.012432
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/AS1A05_194T13_9000002814_18844cztM0_level2.evt modeM0/AS1A05_194T13_9000002814_18844cztM0_level2_quad_clean.evt
Size (bytes)529,905,60066,467,520
Size505.4 MB 63.4 MB
Events in quadrant A3,448,713404,720
Events in quadrant B3,647,727409,276
Events in quadrant C3,510,485381,045
Events in quadrant D5,000,819363,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140452
B0147532
C0142823
D0189552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6492190.292668%
B6492550.847197%
C6491550.847327%
D64913515.407487%

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 7802 6493 3 3 0.04% 0.05%
B 7802 6493 8 8 0.10% 0.12%
C 7801 6492 15 15 0.19% 0.23%
D 7801 6492 294 294 3.77% 4.53%

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 9 143 16671 90.41 885 869 174.8
A 13 254 10139 53.04 885 869 174.8
A 0 23 8979 46.4 885 869 174.8
B 10 245 67436 403.78 886 867 164.9
B 0 197 56376 336.69 886 867 164.9
B 0 230 20752 120.61 886 867 164.9
C 14 238 133460 688.71 833 845 192.6
C 0 207 68211 349.85 833 845 192.6
C 5 112 32454 164.16 833 845 192.6
D 1 52 1134192 5723.14 824 801 198.0
D 12 1 552856 2787.64 824 801 198.0
D 1 20 134021 672.7 824 801 198.0

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