ASTROSAT CZTI

Data Quality Report

Orbit 58686

Creation date: 2026-08-03T12:56:19.477705
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_58686cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58686cztM0_level2_quad_clean.evt
Size (bytes)2,497,553,280406,457,280
Size2.3 GB 387.6 MB
Events in quadrant A15,647,4212,775,814
Events in quadrant B27,008,2712,664,102
Events in quadrant C15,015,4712,726,689
Events in quadrant D32,537,8632,143,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06728232
B010005744
C06394640
D0117199172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05920
B05920
C05920
D05920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2903013034.488460%
B29027489916.877390%
C290284941.701805%
D29021581020.019986%

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 34293 29044 840 840 2.45% 2.89%
B 34294 29040 2942 2942 8.58% 10.13%
C 34294 29042 138 138 0.40% 0.48%
D 34294 29034 4783 4783 13.95% 16.47%

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 2253056 2855.92 3212 3133 787.8
A 10 251 510147 643.57 3212 3133 787.8
A 3 14 168746 210.22 3212 3133 787.8
B 5 172 13591670 21067.31 3022 2901 645.0
B 8 234 361488 555.93 3022 2901 645.0
B 15 32 276524 424.21 3022 2901 645.0
C 15 1 940718 1085.71 3167 3133 863.6
C 14 254 527074 606.72 3167 3133 863.6
C 12 249 286048 327.61 3167 3133 863.6
D 2 249 9915686 12215.41 2883 2758 811.5
D 8 160 4404731 5424.42 2883 2758 811.5
D 8 240 1771965 2180.14 2883 2758 811.5

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