ASTROSAT CZTI

Data Quality Report

Orbit 53126

Creation date: 2025-07-25T12:32:17.122857
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_011T07_9000006488_53126cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53126cztM0_level2_quad_clean.evt
Size (bytes)1,086,353,28080,487,360
Size1.0 GB 76.8 MB
Events in quadrant A17,197,57199,821
Events in quadrant B5,749,792734,749
Events in quadrant C9,488,981583,923
Events in quadrant D7,201,677499,560

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05610419
B0222179
C03347116
D0266711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7447654787.914596%
B74482433.262621%
C7449112615.116123%
D7450166922.402685%

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 7450 7450 6248 6248 83.87% 83.87%
B 7451 7450 246 246 3.30% 3.30%
C 7451 7451 1216 1216 16.32% 16.32%
D 7451 7451 1110 1110 14.90% 14.90%

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 9 191 15204693 160452.46 373 363 94.8
A 3 62 184773 1946.09 373 363 94.8
A 15 174 151438 1594.31 373 363 94.8
B 10 254 2402782 14819.9 752 726 162.1
B 5 185 69294 423.04 752 726 162.1
B 0 213 54963 334.62 752 726 162.1
C 10 22 2659109 13945.71 693 686 190.6
C 15 224 1354729 7103.12 693 686 190.6
C 1 241 1213444 6361.96 693 686 190.6
D 12 3 3389743 18581.41 637 607 182.4
D 3 224 395943 2167.48 637 607 182.4
D 2 249 143082 781.14 637 607 182.4

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