ASTROSAT CZTI

Data Quality Report

Orbit 52644

Creation date: 2025-06-23T14:18:44.914842
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/AS1C09_011T06_9000006478_52644cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52644cztM0_level2_quad_clean.evt
Size (bytes)335,018,88039,444,480
Size319.5 MB 37.6 MB
Events in quadrant A1,861,048287,815
Events in quadrant B2,214,569298,598
Events in quadrant C4,604,182165,963
Events in quadrant D3,479,613221,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079711
B088181
C0158341
D0125441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3094892.876535%
B30941625.235941%
C3094135043.632838%
D309459119.101487%

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 3094 3094 77 77 2.49% 2.49%
B 3094 3094 137 137 4.43% 4.43%
C 3094 3094 1173 1173 37.91% 37.91%
D 3094 3094 523 523 16.90% 16.90%

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 5 243 214413 2834.06 295 288 75.6
A 3 14 210482 2782.03 295 288 75.6
A 8 246 105828 1396.88 295 288 75.6
B 10 128 693050 10668.86 296 286 64.9
B 5 185 76721 1177.13 296 286 64.9
B 10 13 47175 722.11 296 286 64.9
C 15 178 3035467 49466.22 212 210 61.4
C 15 248 531475 8658.14 212 210 61.4
C 13 3 100301 1631.2 212 210 61.4
D 15 93 784740 10043.53 264 251 78.1
D 8 176 751102 9612.88 264 251 78.1
D 1 7 163615 2091.49 264 251 78.1

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