ASTROSAT CZTI

Data Quality Report

Orbit 39307

Creation date: 2024-06-27T22:03:01.996120
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/AS1A12_102T01_9000005466_39307cztM0_level2.fits modeM0/AS1A12_102T01_9000005466_39307cztM0_level2_quad_clean.evt
Size (bytes)604,566,72084,427,200
Size576.6 MB 80.5 MB
Events in quadrant A3,057,338663,382
Events in quadrant B2,836,447670,255
Events in quadrant C2,771,700635,637
Events in quadrant D13,252,095172,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126633
B0123882
C0119442
D0434212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5927130.219335%
B5927160.269951%
C592730.050616%
D5927453776.548001%

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 7239 5928 4 4 0.06% 0.07%
B 7239 5928 6 6 0.08% 0.10%
C 7239 5928 0 0 0.00% 0.00%
D 7239 5928 3746 3746 51.75% 63.19%

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 465939 3480.02 651 638 133.7
A 13 248 69385 514.16 651 638 133.7
A 13 254 7164 48.81 651 638 133.7
B 0 183 97360 787.4 643 626 122.9
B 5 184 74049 597.66 643 626 122.9
B 5 172 36334 290.66 643 626 122.9
C 15 214 265424 1795.98 633 638 147.4
C 14 254 12513 80.55 633 638 147.4
C 9 187 9515 60.21 633 638 147.4
D 12 235 11502857 128411.39 361 348 89.6
D 12 227 211768 2360.24 361 348 89.6
D 2 249 41858 463.41 361 348 89.6

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