ASTROSAT CZTI

Data Quality Report

Orbit 57911

Creation date: 2026-06-11T19:26:12.482292
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_125T11_9000006582_57911cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57911cztM0_level2_quad_clean.evt
Size (bytes)1,139,106,240252,213,120
Size1.1 GB 240.5 MB
Events in quadrant A8,474,7091,666,892
Events in quadrant B9,812,7511,728,690
Events in quadrant C13,969,1041,486,910
Events in quadrant D8,511,2231,509,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386724
B0419024
C0541534
D0385094

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180423131.734841%
B180437394.095771%
C1804314898.252508%
D180432661.474256%

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 19557 18043 83 83 0.42% 0.46%
B 19558 18045 364 364 1.86% 2.02%
C 19558 18045 1189 1189 6.08% 6.59%
D 19558 18044 82 82 0.42% 0.45%

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 9 545934 1136.24 1938 1888 478.8
A 9 108 125947 259.1 1938 1888 478.8
A 7 64 106474 218.43 1938 1888 478.8
B 8 234 713403 1768.16 1886 1812 402.4
B 10 128 577003 1429.23 1886 1812 402.4
B 3 238 184842 454.79 1886 1812 402.4
C 15 224 6030215 12237.48 1822 1797 492.6
C 12 252 353798 714.55 1822 1797 492.6
C 6 223 122916 245.87 1822 1797 492.6
D 3 12 186576 350.43 1884 1805 527.3
D 5 32 160315 300.62 1884 1805 527.3
D 12 248 135375 253.32 1884 1805 527.3

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