ASTROSAT CZTI

Data Quality Report

Orbit 08665

Creation date: 2024-06-27T15:35:38.801359
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/AS1G07_024T01_9000001206_08665cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08665cztM0_level2_quad_clean.evt
Size (bytes)1,500,137,280389,450,880
Size1.4 GB 371.4 MB
Events in quadrant A10,769,4252,578,397
Events in quadrant B11,487,1602,636,890
Events in quadrant C10,193,3882,589,646
Events in quadrant D11,492,7982,475,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047918357
B049298416
C046470327
D050451390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04502
B04502
C04502
D04504

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A220262681.216744%
B220273361.525401%
C220311930.876038%
D220135062.298642%

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 25320 22167 34 34 0.13% 0.15%
B 25320 22160 127 127 0.50% 0.57%
C 25320 22166 45 45 0.18% 0.20%
D 25320 22163 326 326 1.29% 1.47%

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 8 5 1050257 2083.14 2484 2424 503.0
A 15 174 56545 107.6 2484 2424 503.0
A 5 16 30294 55.41 2484 2424 503.0
B 10 16 463349 979.59 2511 2449 470.5
B 4 48 357785 755.23 2511 2449 470.5
B 0 231 247582 521.0 2511 2449 470.5
C 4 254 534687 955.48 2432 2441 557.0
C 1 16 133903 236.0 2432 2441 557.0
C 13 61 18407 28.66 2432 2441 557.0
D 10 253 755183 1287.54 2415 2340 584.7
D 2 152 419053 712.68 2415 2340 584.7
D 7 71 336046 570.72 2415 2340 584.7

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