ASTROSAT CZTI

Data Quality Report

Orbit 53528

Creation date: 2025-08-20T19:17:02.811863
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_004T05_9000006502_53528cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53528cztM0_level2_quad_clean.evt
Size (bytes)840,971,52089,778,240
Size802.0 MB 85.6 MB
Events in quadrant A6,730,173667,586
Events in quadrant B5,884,522681,315
Events in quadrant C12,034,818285,549
Events in quadrant D5,953,640609,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247782
B0221142
C0403927
D0222342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680674210.902145%
B680693513.737878%
C6805418161.440118%
D68055808.523145%

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 7941 6806 470 470 5.92% 6.91%
B 7941 6806 688 688 8.66% 10.11%
C 7939 6804 3219 3219 40.55% 47.31%
D 7940 6805 392 392 4.94% 5.76%

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 1672695 8783.49 772 752 190.4
A 15 174 716525 3760.29 772 752 190.4
A 12 115 570930 2995.41 772 752 190.4
B 10 254 1149922 7408.64 734 709 155.1
B 2 249 1076069 6932.53 734 709 155.1
B 5 185 251756 1618.43 734 709 155.1
C 15 217 7331436 56634.92 470 466 129.4
C 15 224 1602776 12378.54 470 466 129.4
C 1 241 774606 5980.56 470 466 129.4
D 6 239 805211 3730.38 755 720 215.7
D 3 12 625451 2896.84 755 720 215.7
D 2 153 335519 1552.44 755 720 215.7

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