ASTROSAT CZTI

Data Quality Report

Orbit 00721

Creation date: 2024-06-27T14:02:02.250353
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/AS1P01_147T01_9000000106_00721cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00721cztM0_level2_quad_clean.evt
Size (bytes)900,434,88066,435,840
Size858.7 MB 63.4 MB
Events in quadrant A6,578,654408,900
Events in quadrant B6,950,940414,584
Events in quadrant C6,523,819402,436
Events in quadrant D6,834,598384,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236531
B0247401
C0234371
D0244031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5739110.191671%
B5739150.261370%
C5739100.174246%
D5740811.411150%

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 6879 5740 134 134 1.95% 2.33%
B 6879 5740 172 172 2.50% 3.00%
C 6879 5740 103 103 1.50% 1.79%
D 6880 5741 288 288 4.19% 5.02%

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 15 171 37589 88.46 1694 1704 405.6
A 10 230 27307 63.12 1694 1704 405.6
A 12 236 10257 21.09 1694 1704 405.6
B 7 221 76617 178.69 1785 1794 418.7
B 0 220 34145 77.26 1785 1794 418.7
B 5 191 19429 42.11 1785 1794 418.7
C 15 241 75065 160.78 1637 1697 456.3
C 3 111 28809 59.41 1637 1697 456.3
C 3 79 15383 29.99 1637 1697 456.3
D 6 226 580534 1203.35 1561 1614 481.1
D 1 4 147149 302.51 1561 1614 481.1
D 7 207 80149 163.24 1561 1614 481.1

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