ASTROSAT CZTI

Data Quality Report

Orbit 20240421_T05_200T01_9000006196_level2

Creation date: 2024-04-23T12:32:22.067031
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/AS1T05_200T01_9000006196cztM0_level2.fits modeM0/AS1T05_200T01_9000006196cztM0_level2_quad_clean.evt
Size (bytes)988,643,5201,072,566,720
Size942.8 MB 1022.9 MB
Events in quadrant A4,272,6603,880,225
Events in quadrant B6,018,9507,259,435
Events in quadrant C6,252,9287,017,794
Events in quadrant D5,322,4086,281,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023800
B023800
C023800
D023800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06630850
B02922160
C02480820
D02863780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01750
C01750
D01750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1173825742248.918914%
B11738335373.013213%
C11738313281.131339%
D11738340693.466430%

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 134006 110353 0 0 0.00% 0.00%
B 134007 117369 0 0 0.00% 0.00%
C 134007 117381 0 0 0.00% 0.00%
D 134007 117178 0 0 0.00% 0.00%

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 7 110 3442 8.45 1114 1039 284.4
A 15 236 3269 7.84 1114 1039 284.4
A 14 95 3257 7.8 1114 1039 284.4
B 2 9 5675 13.47 1586 1507 309.5
B 2 8 4483 9.61 1586 1507 309.5
B 3 17 4284 8.97 1586 1507 309.5
C 3 202 4709 7.35 1653 1534 432.1
C 1 81 4561 7.0 1653 1534 432.1
C 3 203 4509 6.88 1653 1534 432.1
D 3 14 4003 6.19 1526 1387 422.4
D 15 47 3943 6.05 1526 1387 422.4
D 10 189 3911 5.97 1526 1387 422.4

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