ASTROSAT CZTI

Data Quality Report

Orbit 51594

Creation date: 2025-04-12T14:56:04.669399
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_037T05_9000006460_51594cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51594cztM0_level2_quad_clean.evt
Size (bytes)2,551,199,040363,648,960
Size2.4 GB 346.8 MB
Events in quadrant A18,800,0822,426,107
Events in quadrant B20,684,8852,624,014
Events in quadrant C23,190,9582,163,710
Events in quadrant D29,680,4731,939,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0745113
B0801143
C0879013
D01070133

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2698417526.492736%
B2698321247.871623%
C26983369813.704925%
D26984477517.695672%

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 28334 26988 1165 1165 4.11% 4.32%
B 28333 26987 1215 1215 4.29% 4.50%
C 28333 26985 2644 2644 9.33% 9.80%
D 28334 26987 4486 4486 15.83% 16.62%

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 12 250 2797873 4030.93 2834 2767 693.4
A 7 160 1170134 1683.5 2834 2767 693.4
A 3 130 589182 845.69 2834 2767 693.4
B 10 44 4076726 6754.95 2833 2730 603.1
B 4 174 1503045 2487.62 2833 2730 603.1
B 5 185 600113 990.5 2833 2730 603.1
C 15 232 4045467 5496.08 2670 2652 735.6
C 15 198 3180090 4319.63 2670 2652 735.6
C 9 38 1018763 1381.37 2670 2652 735.6
D 5 113 9339170 13078.3 2583 2497 713.9
D 8 176 2208187 3089.61 2583 2497 713.9
D 12 6 1907788 2668.83 2583 2497 713.9

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