ASTROSAT CZTI

Data Quality Report

Orbit 52095

Creation date: 2025-05-16T11:40:28.007925
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_9000006470_52095cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52095cztM0_level2_quad_clean.evt
Size (bytes)1,109,430,72089,951,040
Size1.0 GB 85.8 MB
Events in quadrant A6,537,282727,521
Events in quadrant B6,937,821783,933
Events in quadrant C11,775,041611,629
Events in quadrant D15,197,98839,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248460
B0262200
C0405590
D0507940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79904195.244055%
B79914816.019272%
C7991272534.100863%
D79907990100.000000%

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 7990 7990 521 521 6.52% 6.52%
B 7991 7991 348 348 4.35% 4.35%
C 7991 7991 2410 2410 30.16% 30.16%
D 7990 7990 3594 3594 44.98% 44.98%

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 12 3 1387807 6855.09 811 789 202.3
A 8 43 932370 4604.17 811 789 202.3
A 3 231 220489 1085.83 811 789 202.3
B 10 254 2123509 12380.68 812 782 171.5
B 5 172 252648 1468.99 812 782 171.5
B 8 3 211362 1228.2 812 782 171.5
C 15 224 5591569 29003.9 690 683 192.8
C 5 80 2102628 10904.28 690 683 192.8
C 15 248 394185 2041.37 690 683 192.8
D 15 94 8290667 410547.2 64 61 20.2
D 12 17 5225921 258782.31 64 61 20.2
D 6 42 1117729 55346.43 64 61 20.2

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