ASTROSAT CZTI

Data Quality Report

Orbit 09626

Creation date: 2024-06-27T15:48:36.479061
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/AS1A03_033T01_9000001368_09626cztM0_level2.evt modeM0/AS1A03_033T01_9000001368_09626cztM0_level2_quad_clean.evt
Size (bytes)755,827,200139,043,520
Size720.8 MB 132.6 MB
Events in quadrant A5,217,430895,319
Events in quadrant B5,293,734882,451
Events in quadrant C4,917,347864,988
Events in quadrant D6,757,184847,383

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217773
B0219222
C0213602
D0270102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104061841.768211%
B104061991.912358%
C104061211.162791%
D104062382.287142%

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 12956 10408 0 0 0.00% 0.00%
B 12956 10408 2 2 0.02% 0.02%
C 12956 10408 0 0 0.00% 0.00%
D 12956 10408 74 74 0.57% 0.71%

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 1 162 50491 186.0 1320 1296 264.5
A 3 1 36585 133.42 1320 1296 264.5
A 1 178 22584 80.49 1320 1296 264.5
B 0 214 116398 477.88 1303 1277 240.9
B 0 229 48715 196.92 1303 1277 240.9
B 12 111 25246 99.5 1303 1277 240.9
C 9 237 17743 58.04 1253 1258 284.0
C 13 61 9524 29.1 1253 1258 284.0
C 10 22 6229 17.5 1253 1258 284.0
D 8 195 975789 3199.46 1266 1237 304.6
D 1 52 504629 1652.64 1266 1237 304.6
D 10 172 142392 463.41 1266 1237 304.6

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