ASTROSAT CZTI

Data Quality Report

Orbit 39232

Creation date: 2024-06-27T22:02:03.721619
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_054T04_9000005446_39232cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39232cztM0_level2_quad_clean.evt
Size (bytes)606,363,84074,620,800
Size578.3 MB 71.2 MB
Events in quadrant A4,066,534592,637
Events in quadrant B2,463,960631,562
Events in quadrant C2,640,484582,859
Events in quadrant D12,861,89081,125

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153573
B0108822
C0110342
D0417892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52994258.020381%
B529980.150972%
C5299100.188715%
D5299475489.715041%

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 7243 5301 285 285 3.93% 5.38%
B 7243 5301 1 1 0.01% 0.02%
C 7243 5301 7 7 0.10% 0.13%
D 7242 5298 3676 3676 50.76% 69.38%

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 13 248 1378929 11580.01 582 571 119.0
A 10 83 436291 3660.62 582 571 119.0
A 13 254 8093 63.19 582 571 119.0
B 0 190 68301 597.09 589 574 113.4
B 5 172 60694 530.03 589 574 113.4
B 0 230 15296 129.79 589 574 113.4
C 15 214 224107 1666.91 574 578 134.1
C 0 239 93415 692.31 574 578 134.1
C 3 233 48743 359.18 574 578 134.1
D 12 235 11043009 153111.26 294 286 72.1
D 2 249 229853 3183.03 294 286 72.1
D 12 227 173492 2401.56 294 286 72.1

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