ASTROSAT CZTI

Data Quality Report

Orbit 40693

Creation date: 2024-06-27T22:19:14.953879
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_029T02_9000005558_40693cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40693cztM0_level2_quad_clean.evt
Size (bytes)320,434,56072,048,960
Size305.6 MB 68.7 MB
Events in quadrant A2,569,816502,119
Events in quadrant B2,243,365520,154
Events in quadrant C4,456,009448,210
Events in quadrant D2,258,390410,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116281394
B0108051299
C0185272349
D0111711479

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0978
B0979
C0979
D09913

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4299100.232612%
B4296360.837989%
C422546310.958580%
D42794179.745268%

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 7246 4415 4 4 0.06% 0.09%
B 7246 4416 16 16 0.22% 0.36%
C 7246 4339 457 457 6.31% 10.53%
D 7246 4374 34 34 0.47% 0.78%

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 448914 4471.53 485 476 100.3
A 12 189 232031 2308.91 485 476 100.3
A 6 10 6060 55.68 485 476 100.3
B 0 229 157009 1666.48 485 472 93.9
B 0 190 88631 938.53 485 472 93.9
B 5 255 31465 329.95 485 472 93.9
C 9 187 2508542 24176.3 446 448 103.7
C 15 214 182880 1758.52 446 448 103.7
C 3 233 18966 178.5 446 448 103.7
D 12 227 140251 1283.8 440 429 108.9
D 12 191 126479 1157.35 440 429 108.9
D 2 250 91357 834.87 440 429 108.9

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