ASTROSAT CZTI

Data Quality Report

Orbit 54947

Creation date: 2025-11-24T09:22:50.013930
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_014T01_9000006528_54947cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54947cztM0_level2_quad_clean.evt
Size (bytes)1,361,574,720265,469,760
Size1.3 GB 253.2 MB
Events in quadrant A9,671,2111,751,140
Events in quadrant B8,680,5041,908,814
Events in quadrant C11,295,4991,665,868
Events in quadrant D19,258,0901,379,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433246
B04085118
C0476465
D07066717

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193334132.136244%
B193232741.417999%
C193336383.300057%
D19328265013.710679%

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 20605 19336 332 332 1.61% 1.72%
B 20604 19331 28 28 0.14% 0.14%
C 20604 19335 438 438 2.13% 2.27%
D 20604 19333 2379 2379 11.55% 12.31%

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 8 249 906847 1765.0 2059 1999 512.7
A 0 8 403864 783.88 2059 1999 512.7
A 4 3 117309 224.92 2059 1999 512.7
B 5 185 184153 416.58 2043 1964 437.3
B 7 252 95311 213.44 2043 1964 437.3
B 5 236 93119 208.43 2043 1964 437.3
C 12 252 949097 1737.21 1990 1970 545.2
C 9 38 733546 1341.85 1990 1970 545.2
C 14 254 555043 1014.44 1990 1970 545.2
D 11 129 2941976 5475.27 1881 1801 537.0
D 11 176 1821664 3389.0 1881 1801 537.0
D 3 12 1497812 2785.91 1881 1801 537.0

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