ASTROSAT CZTI

Data Quality Report

Orbit 53145

Creation date: 2025-07-26T01:48:11.845567
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/AS1C09_011T07_9000006488_53145cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53145cztM0_level2_quad_clean.evt
Size (bytes)1,732,881,600231,655,680
Size1.6 GB 220.9 MB
Events in quadrant A11,852,6741,541,152
Events in quadrant B11,709,3921,759,048
Events in quadrant C21,377,9361,239,191
Events in quadrant D17,818,5491,234,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04810710
B0473283
C0761103
D0655494

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1788414958.359427%
B179973982.211480%
C17997403822.437073%
D17997300716.708340%

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 19637 17887 1162 1162 5.92% 6.50%
B 19637 18000 209 209 1.06% 1.16%
C 19637 17999 3131 3131 15.94% 17.40%
D 19637 18000 2530 2530 12.88% 14.06%

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 9 191 2070061 4678.9 1785 1743 442.1
A 0 8 1098779 2481.69 1785 1743 442.1
A 7 206 352946 794.48 1785 1743 442.1
B 10 254 1784971 4618.07 1841 1775 386.1
B 4 81 802021 2072.45 1841 1775 386.1
B 2 249 484975 1251.38 1841 1775 386.1
C 15 224 4563477 9868.85 1671 1651 462.2
C 15 157 3334893 7210.99 1671 1651 462.2
C 1 241 1607797 3474.67 1671 1651 462.2
D 15 125 7083496 14158.97 1694 1614 500.2
D 3 12 550011 1096.42 1694 1614 500.2
D 2 153 451887 900.24 1694 1614 500.2

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