ASTROSAT CZTI

Data Quality Report

Orbit 58696

Creation date: 2026-08-03T16:32:14.773972
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_004T06_9000006594_58696cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58696cztM0_level2_quad_clean.evt
Size (bytes)1,537,450,560221,904,000
Size1.4 GB 211.6 MB
Events in quadrant A7,812,8631,567,707
Events in quadrant B15,238,7361,468,729
Events in quadrant C9,180,2851,507,322
Events in quadrant D23,381,6151,017,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355262
B0569033
C0394452
D0811412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167921600.952835%
B16792246414.673654%
C167923922.334445%
D16793506730.173286%

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 17267 16795 42 42 0.24% 0.25%
B 17268 16796 1425 1425 8.25% 8.48%
C 17268 16796 253 253 1.47% 1.51%
D 17268 16796 4237 4237 24.54% 25.23%

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 12 114 328319 729.5 1824 1775 447.6
A 3 14 178568 394.96 1824 1775 447.6
A 10 251 168387 372.21 1824 1775 447.6
B 5 172 4316449 11761.31 1708 1638 366.9
B 6 255 1691255 4605.56 1708 1638 366.9
B 2 249 1515846 4127.43 1708 1638 366.9
C 14 254 426067 879.77 1767 1752 482.3
C 6 223 409950 846.36 1767 1752 482.3
C 13 3 388787 802.48 1767 1752 482.3
D 11 129 12678003 29453.14 1516 1444 430.4
D 8 240 1745884 4053.09 1516 1444 430.4
D 8 160 1145763 2658.75 1516 1444 430.4

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