ASTROSAT CZTI

Data Quality Report

Orbit 06500

Creation date: 2024-06-27T15:07:59.422250
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/AS1G06_134T11_9000000870_06500cztM0_level2.evt modeM0/AS1G06_134T11_9000000870_06500cztM0_level2_quad_clean.evt
Size (bytes)733,789,440168,747,840
Size699.8 MB 160.9 MB
Events in quadrant A5,254,0851,089,950
Events in quadrant B5,313,8751,121,490
Events in quadrant C5,098,1271,078,043
Events in quadrant D5,775,5381,024,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237284
B0237493
C0236953
D0255573

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115111080.938233%
B11511850.738424%
C11511320.277995%
D115111050.912171%

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 13931 11513 0 0 0.00% 0.00%
B 13931 11513 1 1 0.01% 0.01%
C 13931 11513 0 0 0.00% 0.00%
D 13931 11513 48 48 0.34% 0.42%

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 15 236 69001 252.18 1343 1316 268.4
A 0 226 13198 44.27 1343 1316 268.4
A 8 15 12396 41.28 1343 1316 268.4
B 0 219 46079 178.21 1351 1322 251.1
B 12 111 25134 94.81 1351 1322 251.1
B 11 111 19693 73.15 1351 1322 251.1
C 1 16 67336 227.17 1282 1286 290.8
C 14 67 19345 62.11 1282 1286 290.8
C 13 61 10258 30.86 1282 1286 290.8
D 8 195 286024 926.09 1280 1240 307.5
D 2 152 186828 603.51 1280 1240 307.5
D 5 97 113581 365.32 1280 1240 307.5

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