ASTROSAT CZTI

Data Quality Report

Orbit 55111

Creation date: 2025-12-06T14:34:24.574118
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_025T01_9000006530_55111cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55111cztM0_level2_quad_clean.evt
Size (bytes)404,020,800101,986,560
Size385.3 MB 97.3 MB
Events in quadrant A4,446,356655,304
Events in quadrant B3,162,523729,420
Events in quadrant C3,571,497638,830
Events in quadrant D3,246,719591,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179502
B0140202
C0153542
D0149852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67942443.591404%
B6794470.691787%
C6794731.074477%
D6793921.354335%

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 7954 6795 219 219 2.75% 3.22%
B 7954 6795 3 3 0.04% 0.04%
C 7954 6795 48 48 0.60% 0.71%
D 7953 6794 64 64 0.80% 0.94%

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 5 241 1546341 8698.36 717 702 177.7
A 0 8 72458 403.82 717 702 177.7
A 3 14 13783 73.62 717 702 177.7
B 0 63 253551 1620.59 724 696 156.0
B 10 247 21445 132.98 724 696 156.0
B 12 111 18961 117.06 724 696 156.0
C 3 242 356028 1830.15 705 700 194.2
C 13 3 195301 1002.31 705 700 194.2
C 14 254 58398 297.18 705 700 194.2
D 12 6 101398 507.97 693 663 198.3
D 2 252 82950 414.94 693 663 198.3
D 15 94 74203 370.84 693 663 198.3

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