ASTROSAT CZTI

Data Quality Report

Orbit 57446

Creation date: 2026-05-11T12:48:57.489231
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_102T01_9000006572_57446cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57446cztM0_level2_quad_clean.evt
Size (bytes)1,584,184,320303,384,960
Size1.5 GB 289.3 MB
Events in quadrant A9,627,7642,039,696
Events in quadrant B13,110,8392,073,044
Events in quadrant C18,217,7931,793,177
Events in quadrant D15,973,7241,755,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456534
B0552184
C0693824
D0631724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221171790.809332%
B2211715206.872541%
C2211721779.843107%
D2211712965.859746%

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 23324 22404 5 5 0.02% 0.02%
B 23324 22404 674 674 2.89% 3.01%
C 23324 22404 1645 1645 7.05% 7.34%
D 23324 22404 1085 1085 4.65% 4.84%

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 2 79 153862 260.38 2391 2336 581.9
A 3 14 112948 190.07 2391 2336 581.9
A 7 64 48007 78.48 2391 2336 581.9
B 4 206 2185039 4460.04 2296 2204 489.4
B 5 185 841622 1715.13 2296 2204 489.4
B 10 247 283876 575.52 2296 2204 489.4
C 15 224 8514365 14217.12 2228 2204 598.7
C 1 16 456741 759.17 2228 2204 598.7
C 13 3 139346 229.06 2228 2204 598.7
D 15 142 2345188 3740.78 2259 2155 626.3
D 8 240 1556881 2482.2 2259 2155 626.3
D 2 249 856449 1363.93 2259 2155 626.3

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