ASTROSAT CZTI

Data Quality Report

Orbit 55217

Creation date: 2025-12-12T11:52:18.766471
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_022T16_9000006532_55217cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55217cztM0_level2_quad_clean.evt
Size (bytes)519,102,720113,175,360
Size495.1 MB 107.9 MB
Events in quadrant A3,757,941745,016
Events in quadrant B3,730,450784,380
Events in quadrant C5,497,635688,740
Events in quadrant D5,608,441653,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173172
B0174362
C0220952
D0225602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79891962.453373%
B79893464.330955%
C79894866.083365%
D79894385.482538%

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 8029 7990 15 15 0.19% 0.19%
B 8029 7990 41 41 0.51% 0.51%
C 8029 7990 401 401 4.99% 5.02%
D 8029 7990 355 355 4.42% 4.44%

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 0 8 103516 473.73 882 859 216.7
A 4 205 80075 365.56 882 859 216.7
A 3 14 40122 181.19 882 859 216.7
B 2 249 207667 1104.7 864 831 187.2
B 5 185 42219 221.05 864 831 187.2
B 12 111 23673 122.0 864 831 187.2
C 12 254 1060490 4642.18 831 824 228.3
C 13 3 373338 1631.91 831 824 228.3
C 14 254 309952 1354.23 831 824 228.3
D 11 129 1205707 5137.41 835 800 234.5
D 2 172 576797 2455.9 835 800 234.5
D 2 249 254376 1081.18 835 800 234.5

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