ASTROSAT CZTI

Data Quality Report

Orbit 42985

Creation date: 2024-06-27T22:46:34.646991
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/AS1T05_148T01_9000005838_42985cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42985cztM0_level2_quad_clean.evt
Size (bytes)359,150,400112,559,040
Size342.5 MB 107.3 MB
Events in quadrant A3,284,882790,549
Events in quadrant B3,635,320785,021
Events in quadrant C2,890,506764,981
Events in quadrant D3,057,320684,573

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135722
B0145082
C0119542
D0128492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5480500.912409%
B54802083.795620%
C548060.109489%
D5480711.295620%

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 7093 5481 25 25 0.35% 0.46%
B 7093 5481 95 95 1.34% 1.73%
C 7093 5481 2 2 0.03% 0.04%
D 7093 5481 59 59 0.83% 1.08%

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 10 83 574588 3843.57 664 652 149.3
A 15 237 124699 830.73 664 652 149.3
A 15 222 13339 84.96 664 652 149.3
B 4 171 890414 6333.2 656 639 140.5
B 4 81 108713 769.24 656 639 140.5
B 5 172 21718 150.04 656 639 140.5
C 15 214 224142 1340.77 649 655 166.7
C 14 254 106093 632.56 649 655 166.7
C 0 207 15192 87.21 649 655 166.7
D 13 249 232429 1372.47 636 614 168.9
D 1 47 206426 1218.52 636 614 168.9
D 1 52 83900 493.1 636 614 168.9

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