ASTROSAT CZTI

Data Quality Report

Orbit 16466

Creation date: 2024-06-27T17:23:12.277183
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/AS1C04_008T01_9000002434_16466cztM0_level2.evt modeM0/AS1C04_008T01_9000002434_16466cztM0_level2_quad_clean.evt
Size (bytes)245,206,08049,481,280
Size233.8 MB 47.2 MB
Events in quadrant A1,735,880315,754
Events in quadrant B1,828,219318,672
Events in quadrant C1,813,797306,823
Events in quadrant D1,797,532298,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127885326
B0136616065
C0128235369
D0142096464

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012846
B012551
C012761
D012351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099
B075
C087
D077

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A365230.082147%
B3626110.303365%
C3676160.435256%
D3609100.277085%

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 7192 4191 2 2 0.03% 0.05%
B 7189 4152 1 1 0.01% 0.02%
C 7191 4197 0 0 0.00% 0.00%
D 7084 4129 9 9 0.13% 0.22%

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 15 174 47699 519.23 439 431 91.0
A 0 226 3909 38.21 439 431 91.0
A 12 194 3173 30.12 439 431 91.0
B 15 35 57443 675.78 437 427 84.4
B 0 198 21069 244.66 437 427 84.4
B 4 173 12974 148.71 437 427 84.4
C 14 238 65711 644.2 426 430 101.3
C 7 247 61680 604.42 426 430 101.3
C 3 233 24255 235.1 426 430 101.3
D 12 218 110946 1052.86 421 409 105.0
D 12 110 54546 515.65 421 409 105.0
D 2 234 18116 168.66 421 409 105.0

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