ASTROSAT CZTI

Data Quality Report

Orbit 58609

Creation date: 2026-07-29T11:11:51.081678
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_58609cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58609cztM0_level2_quad_clean.evt
Size (bytes)571,034,88093,637,440
Size544.6 MB 89.3 MB
Events in quadrant A4,553,586596,052
Events in quadrant B4,772,651649,210
Events in quadrant C7,849,746517,255
Events in quadrant D3,424,551591,111

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183167
B0188069
C0280897
D0151442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69156269.052784%
B69185568.037005%
C6918138119.962417%
D6918871.257589%

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 7699 6918 538 538 6.99% 7.78%
B 7699 6920 452 452 5.87% 6.53%
C 7699 6920 1330 1330 17.27% 19.22%
D 7698 6919 36 36 0.47% 0.52%

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 10 17 1546367 8747.78 724 705 176.7
A 13 248 70075 392.6 724 705 176.7
A 15 233 34403 190.72 724 705 176.7
B 8 234 1323945 8389.35 734 707 157.7
B 0 171 258730 1635.87 734 707 157.7
B 10 44 56818 355.74 734 707 157.7
C 15 164 2359283 12978.55 663 657 181.7
C 15 217 2023118 11128.77 663 657 181.7
C 13 3 405043 2225.17 663 657 181.7
D 2 249 230034 1100.23 738 705 208.4
D 2 120 87160 414.78 738 705 208.4
D 7 222 74042 351.84 738 705 208.4

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