ASTROSAT CZTI

Data Quality Report

Orbit 52459

Creation date: 2025-06-27T19:17:25.188698
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/AS1A13_037T01_9000006476_52459cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52459cztM0_level2_quad_clean.evt
Size (bytes)881,778,24091,967,040
Size840.9 MB 87.7 MB
Events in quadrant A4,602,499728,365
Events in quadrant B4,387,330808,348
Events in quadrant C5,633,750683,909
Events in quadrant D17,394,7778,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193640
B0185340
C0222760
D0571800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79933244.053547%
B7993480.600525%
C79933724.654072%
D7993792599.149256%

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 7993 7993 299 299 3.74% 3.74%
B 7993 7993 28 28 0.35% 0.35%
C 7993 7993 332 332 4.15% 4.15%
D 7993 7993 5396 5396 67.51% 67.51%

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 61 468029 2190.43 854 831 213.3
A 13 248 380392 1779.55 854 831 213.3
A 12 17 90140 418.72 854 831 213.3
B 7 0 461781 2496.19 855 822 184.7
B 4 81 192554 1038.27 855 822 184.7
B 4 171 157537 848.65 855 822 184.7
C 2 12 418946 1876.31 816 813 222.8
C 15 231 333534 1493.03 816 813 222.8
C 4 5 297799 1332.68 816 813 222.8
D 15 93 15941598 400100.46 127 121 39.8
D 6 42 657908 16509.19 127 121 39.8
D 2 136 131393 3294.68 127 121 39.8

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