ASTROSAT CZTI

Data Quality Report

Orbit 38825

Creation date: 2024-06-27T21:56:55.914359
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_083T02_9000005404_38825cztM0_level2.fits modeM0/AS1A12_083T02_9000005404_38825cztM0_level2_quad_clean.evt
Size (bytes)297,843,84091,946,880
Size284.0 MB 87.7 MB
Events in quadrant A2,629,304619,817
Events in quadrant B2,283,782643,318
Events in quadrant C2,471,389610,133
Events in quadrant D3,236,955547,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110493
B0104302
C0106172
D0131022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517770.135213%
B517760.115897%
C5177120.231794%
D51771132.182731%

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 7330 5178 6 6 0.08% 0.12%
B 7330 5178 1 1 0.01% 0.02%
C 7330 5178 11 11 0.15% 0.21%
D 7330 5178 93 93 1.27% 1.80%

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 391084 3405.86 568 559 114.7
A 13 6 13532 113.14 568 559 114.7
A 9 143 11203 92.83 568 559 114.7
B 5 172 13692 120.68 572 556 108.9
B 12 111 13233 116.46 572 556 108.9
B 11 111 12239 107.33 572 556 108.9
C 15 214 229598 1782.65 554 557 128.5
C 15 208 55078 424.34 554 557 128.5
C 0 10 10408 76.67 554 557 128.5
D 2 16 335528 2586.62 542 529 129.5
D 2 249 207577 1598.68 542 529 129.5
D 10 118 182085 1401.85 542 529 129.5

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