ASTROSAT CZTI

Data Quality Report

Orbit 55194

Creation date: 2025-12-11T16:49:05.964275
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/AS1A14_022T16_9000006532_55194cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55194cztM0_level2_quad_clean.evt
Size (bytes)592,810,56092,911,680
Size565.3 MB 88.6 MB
Events in quadrant A7,821,073498,498
Events in quadrant B3,095,131697,943
Events in quadrant C3,715,090613,770
Events in quadrant D6,769,272515,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280402
B0144592
C0159832
D0251412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6996181125.886221%
B6996680.971984%
C69961041.486564%
D6996102914.708405%

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 7791 6997 1496 1496 19.20% 21.38%
B 7791 6997 8 8 0.10% 0.11%
C 7791 6997 42 42 0.54% 0.60%
D 7791 6997 851 851 10.92% 12.16%

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 3 45 2546924 15527.97 661 645 164.0
A 12 115 2098703 12794.58 661 645 164.0
A 0 8 285755 1738.69 661 645 164.0
B 10 247 39314 242.88 741 716 158.9
B 0 182 38519 237.88 741 716 158.9
B 2 249 31775 195.44 741 716 158.9
C 9 38 293606 1468.29 730 722 199.5
C 13 3 193896 968.42 730 722 199.5
C 15 217 129690 646.55 730 722 199.5
D 2 249 1251102 6597.58 680 652 189.5
D 11 176 785341 4140.15 680 652 189.5
D 3 13 778417 4103.62 680 652 189.5

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