ASTROSAT CZTI

Data Quality Report

Orbit 58376

Creation date: 2026-07-13T02:08:52.981544
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_045T01_9000006590_58376cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58376cztM0_level2_quad_clean.evt
Size (bytes)1,808,588,160227,977,920
Size1.7 GB 217.4 MB
Events in quadrant A10,567,9081,697,576
Events in quadrant B33,016,137800,365
Events in quadrant C10,788,1651,599,867
Events in quadrant D11,152,7531,537,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438603
B01107693
C0452013
D0453273

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183883812.072003%
B183881112160.479661%
C183887243.937350%
D183883722.023059%

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 19943 18391 166 166 0.83% 0.90%
B 19943 18388 9356 9356 46.91% 50.88%
C 19943 18390 550 550 2.76% 2.99%
D 19943 18391 318 318 1.59% 1.73%

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 7 64 1156349 2297.46 2012 1960 502.5
A 13 248 504462 1000.08 2012 1960 502.5
A 12 80 474910 941.26 2012 1960 502.5
B 5 172 21222958 68758.22 1440 1385 308.6
B 6 255 3813922 12352.68 1440 1385 308.6
B 2 249 988419 3198.01 1440 1385 308.6
C 15 148 1719086 3257.72 1928 1911 527.1
C 6 223 542665 1025.89 1928 1911 527.1
C 12 252 240357 452.37 1928 1911 527.1
D 11 129 1262115 2293.79 1945 1859 549.4
D 2 153 702375 1275.01 1945 1859 549.4
D 2 249 333808 604.18 1945 1859 549.4

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