ASTROSAT CZTI

Data Quality Report

Orbit 44935

Creation date: 2024-06-27T23:08:08.896662
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/AS1A13_017T02_9000006032_44935cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44935cztM0_level2_quad_clean.evt
Size (bytes)620,095,68091,920,960
Size591.4 MB 87.7 MB
Events in quadrant A4,820,830675,191
Events in quadrant B3,692,134695,063
Events in quadrant C2,773,959681,916
Events in quadrant D11,193,013305,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188761
B0149531
C0124781
D0374521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6105861.408681%
B61051422.325962%
C6104150.245740%
D6105347156.855037%

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 7165 6106 1 1 0.01% 0.02%
B 7165 6106 62 62 0.87% 1.02%
C 7164 6105 4 4 0.06% 0.07%
D 7165 6103 2688 2688 37.52% 44.04%

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 2075154 14185.69 699 683 146.2
A 7 3 27203 181.35 699 683 146.2
A 0 243 11101 71.24 699 683 146.2
B 4 171 514622 3719.58 692 671 138.2
B 5 172 117586 846.14 692 671 138.2
B 3 112 61202 438.08 692 671 138.2
C 1 3 52135 317.59 689 693 162.0
C 14 254 21187 126.52 689 693 162.0
C 3 233 14969 88.14 689 693 162.0
D 13 187 6137600 48828.14 485 469 125.7
D 1 52 1562066 12424.35 485 469 125.7
D 13 249 637506 5068.38 485 469 125.7

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