ASTROSAT CZTI

Data Quality Report

Orbit 39536

Creation date: 2024-06-27T22:05:50.805878
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_018T01_9000005488_39536cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39536cztM0_level2_quad_clean.evt
Size (bytes)286,701,12087,805,440
Size273.4 MB 83.7 MB
Events in quadrant A2,607,611583,719
Events in quadrant B2,233,226602,036
Events in quadrant C2,698,544577,655
Events in quadrant D2,663,880527,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111413
B0106602
C0114792
D0120192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5249100.190512%
B5249110.209564%
C5249300.571537%
D5249811.543151%

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 7221 5250 3 3 0.04% 0.06%
B 7221 5250 2 2 0.03% 0.04%
C 7221 5250 28 28 0.39% 0.53%
D 7221 5250 73 73 1.01% 1.39%

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 421290 3727.65 550 538 112.9
A 15 222 54452 477.65 550 538 112.9
A 13 254 7573 62.33 550 538 112.9
B 5 255 53260 490.02 550 534 107.6
B 12 111 13336 118.98 550 534 107.6
B 11 111 11990 106.47 550 534 107.6
C 9 187 321467 2566.89 538 540 125.0
C 15 214 222868 1778.26 538 540 125.0
C 15 208 36354 286.45 538 540 125.0
D 12 227 310157 2391.79 530 515 129.5
D 13 249 214663 1654.16 530 515 129.5
D 2 250 33080 251.54 530 515 129.5

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