ASTROSAT CZTI

Data Quality Report

Orbit 53929

Creation date: 2025-09-16T21:19:48.368773
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_057T04_9000006508_53929cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53929cztM0_level2_quad_clean.evt
Size (bytes)1,343,344,320195,586,560
Size1.3 GB 186.5 MB
Events in quadrant A8,175,3231,370,003
Events in quadrant B8,221,6171,446,149
Events in quadrant C9,665,4501,260,674
Events in quadrant D22,510,246814,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345963
B0349792
C0393152
D0770792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149165303.553231%
B149165563.727541%
C149167975.343256%
D14917532735.710934%

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 15260 14915 247 247 1.62% 1.66%
B 15261 14916 191 191 1.25% 1.28%
C 15260 14916 624 624 4.09% 4.18%
D 15262 14917 5296 5296 34.70% 35.50%

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 15 174 551893 1383.84 1621 1583 397.7
A 0 8 394652 988.43 1621 1583 397.7
A 3 45 234278 585.15 1621 1583 397.7
B 0 213 771875 2265.78 1598 1541 340.0
B 5 236 347581 1017.81 1598 1541 340.0
B 4 67 170963 498.32 1598 1541 340.0
C 1 241 1409928 3348.15 1544 1532 420.6
C 15 157 580470 1376.3 1544 1532 420.6
C 12 2 305253 722.03 1544 1532 420.6
D 8 176 10526353 28043.17 1308 1252 375.3
D 6 239 1865117 4966.1 1308 1252 375.3
D 2 172 1599838 4259.29 1308 1252 375.3

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