ASTROSAT CZTI

Data Quality Report

Orbit 52528

Creation date: 2025-06-25T16:37:16.214425
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_52528cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52528cztM0_level2_quad_clean.evt
Size (bytes)592,891,20080,919,360
Size565.4 MB 77.2 MB
Events in quadrant A2,894,438571,647
Events in quadrant B4,838,640582,525
Events in quadrant C4,199,653538,537
Events in quadrant D9,539,217329,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134371
B0186531
C0168731
D0326261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6117941.536701%
B61185218.515855%
C61182203.595946%
D6118238839.032364%

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 7072 6118 60 60 0.85% 0.98%
B 7073 6119 335 335 4.74% 5.47%
C 7073 6119 206 206 2.91% 3.37%
D 7073 6119 2237 2237 31.63% 36.56%

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 251073 1608.93 625 611 155.7
A 15 174 65364 415.96 625 611 155.7
A 5 240 46049 291.89 625 611 155.7
B 12 32 1208320 9364.06 605 584 129.0
B 10 254 756302 5859.38 605 584 129.0
B 10 128 122009 941.45 605 584 129.0
C 15 224 553195 3319.41 596 589 166.5
C 2 12 354958 2128.63 596 589 166.5
C 13 3 273576 1639.79 596 589 166.5
D 6 42 3287161 23181.28 485 459 141.8
D 15 93 3045693 21478.19 485 459 141.8
D 11 176 221038 1555.76 485 459 141.8

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