ASTROSAT CZTI

Data Quality Report

Orbit 57213

Creation date: 2026-04-29T23:28:38.427045
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_070T08_9000006568_57213cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57213cztM0_level2_quad_clean.evt
Size (bytes)1,494,624,960244,647,360
Size1.4 GB 233.3 MB
Events in quadrant A7,870,2231,699,574
Events in quadrant B9,779,1651,806,903
Events in quadrant C20,563,8801,293,648
Events in quadrant D15,688,6541,338,747

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376563
B0420183
C0739583
D0594993

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184012901.576001%
B184026993.798500%
C18402416322.622541%
D18402238812.976850%

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 19641 18404 8 8 0.04% 0.04%
B 19642 18405 229 229 1.17% 1.24%
C 19642 18405 3185 3185 16.22% 17.31%
D 19642 18405 2216 2216 11.28% 12.04%

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 3 95 89251 179.77 1980 1930 485.7
A 13 248 51361 101.76 1980 1930 485.7
A 10 251 28489 54.68 1980 1930 485.7
B 5 185 866306 2116.96 1931 1854 408.3
B 4 201 236895 575.59 1931 1854 408.3
B 0 155 158366 383.28 1931 1854 408.3
C 15 224 13131169 28181.04 1728 1710 465.9
C 12 254 319176 681.41 1728 1710 465.9
C 12 252 106345 224.59 1728 1710 465.9
D 12 33 6444699 12573.02 1819 1737 512.4
D 8 240 581359 1131.09 1819 1737 512.4
D 12 128 404775 786.5 1819 1737 512.4

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