ASTROSAT CZTI

Data Quality Report

Orbit 44599

Creation date: 2024-06-27T23:04:21.839111
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/AS1A13_009T03_9000006006_44599cztM0_level2.fits modeM0/AS1A13_009T03_9000006006_44599cztM0_level2_quad_clean.evt
Size (bytes)1,061,939,520181,330,560
Size1012.7 MB 172.9 MB
Events in quadrant A10,205,3541,268,923
Events in quadrant B12,404,5691,062,119
Events in quadrant C6,113,1521,241,048
Events in quadrant D9,654,2111,083,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399182
B0450942
C0268992
D0371772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120614313.573501%
B12061251220.827460%
C120601881.558872%
D120609928.225539%

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 13476 12061 191 191 1.42% 1.58%
B 13475 12060 2271 2271 16.85% 18.83%
C 13475 12060 126 126 0.94% 1.04%
D 13475 12061 977 977 7.25% 8.10%

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 10 83 3273739 11819.34 1336 1306 276.9
A 15 223 1608299 5804.12 1336 1306 276.9
A 13 248 109104 389.34 1336 1306 276.9
B 14 167 7144455 29124.69 1228 1190 245.3
B 5 172 192417 779.67 1228 1190 245.3
B 0 219 142388 575.69 1228 1190 245.3
C 12 2 654597 2112.71 1310 1317 309.2
C 14 254 189621 608.98 1310 1317 309.2
C 12 250 113594 363.1 1310 1317 309.2
D 13 249 2502979 7808.96 1279 1243 320.4
D 1 52 753491 2348.08 1279 1243 320.4
D 5 222 581785 1812.11 1279 1243 320.4

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