ASTROSAT CZTI

Data Quality Report

Orbit 52544

Creation date: 2025-06-15T13:23:38.152965
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/AS1C09_011T06_9000006478_52544cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52544cztM0_level2_quad_clean.evt
Size (bytes)692,182,08089,830,080
Size660.1 MB 85.7 MB
Events in quadrant A3,262,053642,967
Events in quadrant B5,466,376646,092
Events in quadrant C4,936,092592,167
Events in quadrant D11,420,446355,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149612
B0210969
C01964513
D0388006

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69271562.252057%
B69276058.733940%
C69274135.962177%
D6928307244.341801%

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 7198 6930 25 25 0.35% 0.36%
B 7199 6930 279 279 3.88% 4.03%
C 7199 6930 266 266 3.69% 3.84%
D 7199 6931 2689 2689 37.35% 38.80%

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 62 66823 369.26 726 710 179.0
A 5 243 62194 343.4 726 710 179.0
A 3 45 39233 215.16 726 710 179.0
B 10 44 763582 5108.93 699 675 149.3
B 10 254 717725 4801.84 699 675 149.3
B 0 213 390374 2609.68 699 675 149.3
C 15 248 785761 4122.86 682 675 190.4
C 13 3 711727 3734.08 682 675 190.4
C 12 254 262385 1374.36 682 675 190.4
D 6 42 6601693 41003.54 554 527 161.0
D 15 93 781764 4852.7 554 527 161.0
D 8 176 449591 2789.39 554 527 161.0

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