ASTROSAT CZTI

Data Quality Report

Orbit 41700

Creation date: 2024-06-27T22:31:44.976943
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/AS1A12_035T02_9000005690_41700cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41700cztM0_level2_quad_clean.evt
Size (bytes)438,154,560122,679,360
Size417.9 MB 117.0 MB
Events in quadrant A3,855,233820,673
Events in quadrant B3,508,316831,390
Events in quadrant C3,555,968803,386
Events in quadrant D4,708,821730,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161402
B0160942
C0155072
D0191942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7597100.131631%
B7597630.829275%
C7597330.434382%
D75971922.527313%

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 8909 7598 5 5 0.06% 0.07%
B 8909 7598 45 45 0.51% 0.59%
C 8909 7598 30 30 0.34% 0.39%
D 8909 7598 197 197 2.21% 2.59%

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 10 83 663066 3935.22 820 804 168.3
A 13 248 12894 71.84 820 804 168.3
A 13 254 11311 62.43 820 804 168.3
B 4 171 276103 1743.06 812 786 158.0
B 12 111 19583 119.01 812 786 158.0
B 11 111 18941 114.94 812 786 158.0
C 15 214 308691 1624.13 808 813 189.6
C 0 10 97168 508.29 808 813 189.6
C 13 61 5416 24.28 808 813 189.6
D 2 249 454679 2306.39 800 778 196.8
D 12 79 451780 2291.66 800 778 196.8
D 13 249 442598 2245.0 800 778 196.8

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