ASTROSAT CZTI

Data Quality Report

Orbit 51193

Creation date: 2025-03-17T11:57:28.562029
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/AS1C07_001T01_9000006454_51193cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51193cztM0_level2_quad_clean.evt
Size (bytes)764,674,56082,163,520
Size729.3 MB 78.4 MB
Events in quadrant A4,656,745588,534
Events in quadrant B5,982,517618,896
Events in quadrant C12,931,166291,590
Events in quadrant D4,229,886533,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183391
B0223361
C0428511
D0172761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65311802.756086%
B65325037.700551%
C6532368156.353337%
D65322123.245560%

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 7031 6533 93 93 1.32% 1.42%
B 7032 6534 239 239 3.40% 3.66%
C 7032 6534 3342 3342 47.53% 51.15%
D 7032 6534 189 189 2.69% 2.89%

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 12 3 773195 4679.81 668 652 165.1
A 9 160 329328 1991.01 668 652 165.1
A 14 254 279510 1689.23 668 652 165.1
B 10 254 1813654 12805.56 657 634 141.6
B 4 21 230218 1621.58 657 634 141.6
B 5 172 198302 1396.15 657 634 141.6
C 4 12 7353115 54614.5 487 482 134.6
C 12 247 2583746 19188.18 487 482 134.6
C 15 229 390201 2894.79 487 482 134.6
D 15 174 380018 2125.61 639 617 178.5
D 10 181 238512 1332.82 639 617 178.5
D 3 12 228334 1275.79 639 617 178.5

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