ASTROSAT CZTI

Data Quality Report

Orbit 56787

Creation date: 2026-03-28T03:28:30.086979
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_083T03_9000006562_56787cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56787cztM0_level2_quad_clean.evt
Size (bytes)525,237,120110,027,520
Size500.9 MB 104.9 MB
Events in quadrant A5,099,715714,764
Events in quadrant B4,596,302756,010
Events in quadrant C5,468,620675,595
Events in quadrant D3,680,133649,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202792
B0192582
C0219062
D0168722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77031962.544463%
B77033274.245099%
C77031842.388680%
D7703700.908737%

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 7718 7704 102 102 1.32% 1.32%
B 7718 7704 210 210 2.72% 2.73%
C 7718 7704 132 132 1.71% 1.71%
D 7718 7704 51 51 0.66% 0.66%

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 14 1346922 6632.69 822 802 203.0
A 10 251 390639 1920.83 822 802 203.0
A 3 62 81064 395.47 822 802 203.0
B 8 128 523806 2984.92 809 780 175.2
B 2 249 207822 1181.59 809 780 175.2
B 5 185 178724 1015.53 809 780 175.2
C 9 38 1579512 7352.1 786 775 214.7
C 15 230 245117 1137.89 786 775 214.7
C 12 252 162750 754.31 786 775 214.7
D 2 249 233073 1044.17 794 760 222.5
D 2 31 83678 372.69 794 760 222.5
D 5 32 69200 307.62 794 760 222.5

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