ASTROSAT CZTI

Data Quality Report

Orbit 54617

Creation date: 2025-11-02T02:35:04.311775
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_066T07_9000006522_54617cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54617cztM0_level2_quad_clean.evt
Size (bytes)400,429,44097,882,560
Size381.9 MB 93.3 MB
Events in quadrant A3,428,242643,644
Events in quadrant B3,866,113683,276
Events in quadrant C3,599,226612,488
Events in quadrant D3,437,471583,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145352
B0158672
C0150472
D0147412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63171732.738642%
B63172473.910084%
C63171812.865284%
D63161001.583281%

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 7467 6317 86 86 1.15% 1.36%
B 7466 6316 112 112 1.50% 1.77%
C 7467 6317 97 97 1.30% 1.54%
D 7466 6316 53 53 0.71% 0.84%

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 13 248 204158 1136.86 727 710 179.0
A 3 14 135709 754.37 727 710 179.0
A 11 3 135551 753.49 727 710 179.0
B 5 172 383376 2504.2 714 690 152.8
B 8 234 245712 1603.36 714 690 152.8
B 1 207 141564 921.84 714 690 152.8
C 13 3 398947 2032.19 711 703 196.0
C 14 254 92038 466.07 711 703 196.0
C 6 223 72061 364.13 711 703 196.0
D 2 62 188412 927.08 712 684 202.5
D 2 172 115643 567.72 712 684 202.5
D 3 176 65073 317.98 712 684 202.5

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