ASTROSAT CZTI

Data Quality Report

Orbit 53683

Creation date: 2025-08-31T07:08:59.007412
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_022T05_9000006504_53683cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53683cztM0_level2_quad_clean.evt
Size (bytes)1,406,430,720108,495,360
Size1.3 GB 103.5 MB
Events in quadrant A20,997,416354,071
Events in quadrant B5,246,278983,108
Events in quadrant C18,303,638443,744
Events in quadrant D6,753,598819,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0691842
B0226903
C0611152
D0269992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9862664767.400122%
B98621311.328331%
C9862538654.613669%
D98623583.630095%

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 11366 9862 6426 6426 56.54% 65.16%
B 11367 9864 79 79 0.69% 0.80%
C 11366 9862 5004 5004 44.03% 50.74%
D 11367 9864 351 351 3.09% 3.56%

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 3 63 15341486 78333.62 784 766 195.8
A 3 78 721600 3680.76 784 766 195.8
A 3 94 362655 1847.9 784 766 195.8
B 5 185 597072 2668.17 1041 1004 223.4
B 7 0 206588 920.25 1041 1004 223.4
B 10 247 50967 223.65 1041 1004 223.4
C 15 224 6444729 32290.21 720 716 199.6
C 1 241 5017231 25137.18 720 716 199.6
C 7 64 1598651 8007.07 720 716 199.6
D 10 172 1035085 3541.82 1011 965 292.0
D 7 70 513899 1756.78 1011 965 292.0
D 2 37 194863 664.09 1011 965 292.0

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