ASTROSAT CZTI

Data Quality Report

Orbit 50709

Creation date: 2025-02-11T23:00:06.020882
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_003T01_9000006448_50709cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50709cztM0_level2_quad_clean.evt
Size (bytes)751,875,84077,636,160
Size717.0 MB 74.0 MB
Events in quadrant A3,579,639589,359
Events in quadrant B3,433,208641,846
Events in quadrant C7,269,509480,020
Events in quadrant D13,072,912209,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145511
B0145311
C0257581
D0430172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61521101.788036%
B61521702.763329%
C6153131721.404193%
D6152410566.726268%

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 7217 6153 60 60 0.83% 0.98%
B 7217 6153 84 84 1.16% 1.37%
C 7218 6153 1015 1015 14.06% 16.50%
D 7217 6152 3597 3597 49.84% 58.47%

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 4 3 300922 1849.65 651 634 162.3
A 0 31 127647 782.35 651 634 162.3
A 8 247 126747 776.8 651 634 162.3
B 0 229 268566 1959.59 649 628 136.7
B 7 0 176514 1286.36 649 628 136.7
B 8 128 104433 759.19 649 628 136.7
C 5 10 1910317 11685.62 590 584 163.4
C 0 193 1263263 7726.31 590 584 163.4
C 15 1 439347 2684.78 590 584 163.4
D 8 176 9561898 82922.76 412 397 115.3
D 10 98 855947 7419.81 412 397 115.3
D 6 63 303115 2625.34 412 397 115.3

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