ASTROSAT CZTI

Data Quality Report

Orbit 54428

Creation date: 2025-10-20T09:09:15.888557
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_126T19_9000006518_54428cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54428cztM0_level2_quad_clean.evt
Size (bytes)526,409,28088,162,560
Size502.0 MB 84.1 MB
Events in quadrant A2,923,260622,667
Events in quadrant B3,037,794676,738
Events in quadrant C6,824,023476,115
Events in quadrant D6,200,187444,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137082
B0137942
C0249042
D0230302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6435881.367521%
B6435490.761461%
C6435150423.372183%
D6434141421.976997%

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 7595 6436 73 73 0.96% 1.13%
B 7595 6436 14 14 0.18% 0.22%
C 7595 6436 1473 1473 19.39% 22.89%
D 7594 6435 1124 1124 14.80% 17.47%

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 5 243 207394 1243.42 673 657 166.3
A 4 3 28366 166.66 673 657 166.3
A 13 254 19877 115.6 673 657 166.3
B 10 247 87056 595.25 680 656 145.1
B 0 213 74364 507.81 680 656 145.1
B 0 171 50517 343.52 680 656 145.1
C 1 241 3578417 22042.67 591 585 162.3
C 13 3 412329 2536.71 591 585 162.3
C 1 16 168983 1037.48 591 585 162.3
D 8 176 2963600 18983.38 541 516 156.1
D 10 181 422462 2703.25 541 516 156.1
D 5 113 243934 1559.49 541 516 156.1

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