ASTROSAT CZTI

Data Quality Report

Orbit 55445

Creation date: 2025-12-27T19:20:01.585399
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_099T01_9000006536_55445cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55445cztM0_level2_quad_clean.evt
Size (bytes)304,830,72070,407,360
Size290.7 MB 67.1 MB
Events in quadrant A2,562,674467,326
Events in quadrant B2,251,541491,350
Events in quadrant C2,730,011433,838
Events in quadrant D3,372,926409,486

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0982
B0971
C0982
D0982

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011101221
B010549379
C011877173
D013573278

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46941342.854708%
B46881793.818259%
C47062174.611135%
D46952405.111821%

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 7130 4708 20 20 0.28% 0.42%
B 7118 4702 51 51 0.72% 1.08%
C 7138 4730 122 122 1.71% 2.58%
D 7134 4712 134 134 1.88% 2.84%

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 4 159 334281 2604.3 516 502 128.2
A 3 78 146247 1137.17 516 502 128.2
A 12 115 59930 463.68 516 502 128.2
B 12 32 130802 1210.82 503 484 107.6
B 5 172 43008 395.1 503 484 107.6
B 10 247 22902 208.29 503 484 107.6
C 13 3 710157 5189.05 499 492 136.8
C 12 252 47209 341.59 499 492 136.8
C 14 254 15601 110.48 499 492 136.8
D 11 129 632373 4409.3 497 474 143.3
D 15 125 412180 2872.82 497 474 143.3
D 2 249 121587 845.11 497 474 143.3

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