ASTROSAT CZTI

Data Quality Report

Orbit 58082

Creation date: 2026-06-23T06:11:11.684615
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_031T01_9000006584_58082cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58082cztM0_level2_quad_clean.evt
Size (bytes)716,425,920108,417,600
Size683.2 MB 103.4 MB
Events in quadrant A5,282,038722,660
Events in quadrant B11,620,784581,963
Events in quadrant C3,781,914723,286
Events in quadrant D5,186,583674,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219721
B0402770
C0176100
D0213520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83575456.521479%
B8357273332.703123%
C8357280.335048%
D83582232.668102%

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 8538 8536 390 390 4.57% 4.57%
B 8538 8536 2071 2071 24.26% 24.26%
C 8538 8536 20 20 0.23% 0.23%
D 8539 8537 196 196 2.30% 2.30%

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 10 251 1757290 7930.9 903 879 221.5
A 13 254 13633 57.59 903 879 221.5
A 4 3 13495 56.97 903 879 221.5
B 10 128 7946955 46865.93 793 762 169.6
B 2 249 174884 1026.96 793 762 169.6
B 4 201 126655 742.51 793 762 169.6
C 12 252 118749 485.29 893 886 242.9
C 12 254 71605 291.18 893 886 242.9
C 15 201 37236 149.67 893 886 242.9
D 12 1 715716 2886.85 880 844 247.6
D 12 110 402795 1623.19 880 844 247.6
D 2 249 189096 760.21 880 844 247.6

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