ASTROSAT CZTI

Data Quality Report

Orbit 25324

Creation date: 2024-06-27T19:16:22.763950
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/AS1A09_059T01_9000003706_25324cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25324cztM0_level2_quad_clean.evt
Size (bytes)1,039,032,000169,450,560
Size990.9 MB 161.6 MB
Events in quadrant A5,865,7521,101,366
Events in quadrant B5,935,2961,108,217
Events in quadrant C8,005,2221,036,403
Events in quadrant D10,799,9101,004,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258920
B0260550
C0324370
D0407210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12748580.454973%
B12748880.690304%
C127487025.506746%
D127487966.244117%

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 13958 12750 0 0 0.00% 0.00%
B 13958 12750 0 0 0.00% 0.00%
C 13958 12748 263 263 1.88% 2.06%
D 13958 12750 606 606 4.34% 4.75%

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 15 173 36559 115.86 1511 1480 302.8
A 13 254 20246 61.98 1511 1480 302.8
A 3 137 14263 42.22 1511 1480 302.8
B 0 190 39302 132.09 1503 1467 286.4
B 12 111 36057 120.76 1503 1467 286.4
B 11 111 31991 106.56 1503 1467 286.4
C 9 54 2127837 6383.7 1433 1441 333.1
C 14 238 227557 678.83 1433 1441 333.1
C 2 16 21275 59.54 1433 1441 333.1
D 1 52 3685723 10489.52 1444 1404 351.2
D 8 195 936114 2661.19 1444 1404 351.2
D 12 233 208077 588.41 1444 1404 351.2

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